AviSynth+: baixar versions anteriors

Hotfix release for YtoUV and non-x86 platforms
- CMakeLists.txt: if CMAKE_BUILD_TYPE isn't set, use Release
- Update build.yml, retire unsupported 20.04, add 24.04
- Fix an llvm syntax warning.
- rstdoc: update change log
- Bump to IF v11.1: Fix AVS_Value 64 bit data member declaration for 64 bit non Intel (X86_X64) systems.
- rstdoc: open 3.7.5 change log, add Raspberry pi stuff to posix.
- Fix gcc compilation warning
- Fix: resizer crash for non-intel (e.g. aarch64), regression in 3.7.4
- Fix #434: YtoUV crash, regression since 61d2c9aa3ae41fc5def86cc30ff7f7c577fdcd16
- Add pkgconf->cmake detection fallback message for SoundTouch
- avisynth+_arm64.iss: assorted fixups
- plugins/CMakeLists.txt: fix VDubFilter build check
- Remove upx.exe from the source tree

- C interface Win32 access: fix issue by adding V8 interface function…
… names to avisynth.def

or else names are decorated (Issue #276)
e.g. DLL published _avs_get_frame_props_ro@8 instead of avs_get_frame_props_ro

- ShowRed/Green/Blue/Alpha/Y/U/V: addition to earlier fixes:
When clips are planar and both source and destination format have alpha plane,
then it will be copied instead of filled with 255d.
Additional checking is done for alpha plane size when ShowU/V, because when
source is subsampled the original alpha plane cannot be copied (larger).

- ConvertBits:
Does not get frame 0 in constructor for frame properties if 'fulls' is directly specified. (magiblot)
May make script initialization much quicker (Issue #275)
#275

- Trim, AudioTrim: bool 'cache' (default true) parameter.
Workaround for Issue #274, lower memory consumption but may be slower.
Benefits heavily depend on how trimmed clips are used later.

- Expr: scale_inputs to case insensitive and add floatUV to error message as an allowed value.

- propCopy: able to specify that the property list is negative.
bool "exclude" = false # default: "props" is positive list

propCopy(org,true,props=["_Matrix", "_ColorRange"], exclude=false) # merge only two properties
propCopy(org,true,props=["_Matrix", "_ColorRange"], exclude=true) # merge all, except listed ones
propCopy(org,props=["_Matrix", "_ColorRange"]) # erase all then copy only selected
propCopy(org,props=["_Matrix", "_ColorRange"], exclude = true) # erase all, then copy all, except listed ones

- Version()
New optional parameters

int length, int width, int height, string pixel_type, clip c

Version clip defaults:
length=240, width = -1, height = -1 (-1: automatically sized to fit for font size 24)
pixel_type = "RGB24"

When 'clip' (a format template) is specified then pixel_type, length,
fps data, width and height are defined from it.
If any additional 'length', 'width', 'height', 'pixel_type' parameter is given, it overrides defaults.
When width and height is given and is <= 0 then it is treated as 'automatic'

Covers feature request Issue #261

- BlankClip: allow 'colors' with array size more than the number of actual planes.
If an array is larger, further values are simply ignored.

- BlankClip, AddBorders, LetterBox: no A=0 check for non-YUVA

- Fade filter family new parameters
int 'color_yuv'
array of float 'colors'
similar to BlankClip

- MergeRGB, MergeARGB

- add MergeARGB parameter "pixel_type", similar to MergeRGB
- accept pixel_type other than packed RGB formats, plus a special one is "rgb"
- output format is planar rgb(a) (MergeRGB/MergeARGB) when
- pixel_type = "rgb" or
- pixel_type is empty and
- either input is planar RGB
- either input is different from 8 or 16 bits (no packed RGB formats there)
- pixel_type is explicitely set to a valid planar rgb constant e.g. "RGBP10"
- Accept planar RGB clip in place of input clips and the appropriate color plane is copied from them
- Fill alpha channel with zero when MergeRGB output pixel_type format is specified to have an alpha plane
- frame property source is the R clip; _Matrix and _ChromaLocation are removed if R is not an RGB clip

- PropDelete: accept a non-empty array string as list of property names to remove
Parameter is not optional, and has no name. It can be either a string (as before) or an array of strings
propDelete("_Matrix") # old syntax, still accepted
propDelete(["_Matrix", "_ColorRange"])

- PropCopy: new string parameter "props" as list of property names to remove
"props": a non-empty array of strings

old syntax, still accepted:
propCopy(org,true) # merge from all org's properties
propCopy(org,false) # erase all then copy all org's properties (exact copy)
new syntax
propCopy(org,true,props=["_Matrix", "_ColorRange"]) # merge
propCopy(org,props=["_Matrix", "_ColorRange"]) # erase all then copy only selected

- Histogram Levels: stop using shades of grey on top of bars.

- Histogram Levels: use bar color 255 for RGB instead of Y's 23

Additions:
- Linux: Show more information when dlopen fails
- Expr: allow auto scaling effect on pixels obtained from relative addressing
- New array manipulators: ArrayDel, ArrayAdd, ArrayIns, ArraySet with accepting multi dimensional indexes
- ExtractY/U/V/R/G/B/A, PlaneToY: delete _ChromaLocation property. Set _ColorRange property to "full" if source is Alpha plane
- Add new AEP (Avisynth Environtment Property) constants to directly query Avisynth interface main and bugfix version and system endianness:
- AEP_HOST_SYSTEM_ENDIANNESS, AEP_INTERFACE_VERSION, AEP_INTERFACE_BUGFIX (c++)
- AVS_AEP_HOST_SYSTEM_ENDIANNESS, AVS_AEP_INTERFACE_VERSION, AVS_AEP_INTERFACE_BUGFIX (c)
- Interface: introduce AVISYNTHPLUS_INTERFACE_BUGFIX_VERSION.
- New interface functions env->MakePropertyWritable/VideoFrame::IsPropertyWritable.
- Expr: allow 'f32' as internal autoscale target (was: i8, i10, i12, i14, i16 were accepted, only integers)
- Expr: LUT mode! 'lut'=1 or 2 for 1D (lut_x) and 2D (lux_xy) support
- xPlaneMin/Max/Median/MinMaxDifference to accept old packed formats (RGB24/32/48/64 and YUY2) by autoconverting them to Planar RGB or YV16
- New runtime function: PlaneMinMaxStats returns an array and/or set global variables.
- Language syntax: accept arrays in the place of "val" script function parameter type regardless of being named or unnamed.
- Histogram "Levels": more precise drawing when bit depth is different from histogram's resolution bit depth, plus using full/limited flag.
- Expr: no more banker's rounding when converting back float result to integer pixels. Using the usual truncate(x+0.5) rounding method
- ColorYUV: More consistent and accurate output across different color spaces, match with ConvertBits fulls-fulld conversions
- ColorYUV: set _ColorRange frame property
- ColorYUV: when no hint is given by parameter "levels" then it can use _ColorRange (limited/full) frame property for establishing source range for gamma
- ColorYUV "showyuv_fullrange"=true: fix shown U and V ranges. E.g. for bits=8: 128 +/- 127 (range 1..255 is shown) instead of 0..255
- propShow: display _Matrix, _ColorRange and _ChromaLocation constants with friendly names
- Expr: new function "sgn". Returns -1 when x is negative; 0 if zero; 1 when x is positive
- Expr: add "neg": negates stack top: a = -a
- ConvertBits: Support YUY2 (by autoconverting to and from YV16), support YV411
- ConvertBits: "bits" parameter is not compulsory, since bit depth can stay as it was before. Call like ConvertBits(fulld=true)
- ConvertBits: much nicer output for low bit depth targets such as dither_bits 1 to 7.
- ConvertBits: allow dither down from 8 bit sources by giving a lower dither_bits value
- ConvertBits: dither=1 (Floyd-S) to support dither_bits = 1 to 16 (similar to ordered dither)
- ConvertBits: dither=0 (ordered) to allow odd dither_bits values. Any dither_bits=1 to 16 (was: 2,4,6,8,..)
- ConvertBits: dither=0 (ordered) allow larger than 8 bit difference when dither_bits is less than 8.
- ConvertBits: Correct conversion of full-range chroma at 8-16 bits. Like 128+/-112 -> 128+/-127 in 8 bits
- ConvertBits: allow dither from 32 bits to 8-16 bits
- ConvertBits: allow different fulls fulld when converting between integer bit depths (was: they must have been the same)
- ConvertBits: allow 32 bit to 32 bit conversion
- frame property support: _ChromaLocation in various filters (e.g. ConvertToYUV422)
- Support additional chroma locations "top", "bottom_left", "bottom"
- New syntax for "matrix" parameters (e.g. in ConvertToYUV444 old:"rec601" new "170m:l") which separate matrix and full/limited marker.
- Old syntax is still valid but does not support all new matrix values.
- frame propery support: _Matrix and _ColorRange in various filters. New "matrix" string constants
- RGB<->YUV (YUY2) conversions: frame property support _Matrix and _ColorRange (_Primaries and _Transfer is not used at all yet)
- ConvertBits: use input frame property _ColorRange to detect full/limited