Certain services may request certain x264-specific options (such as
scenecut=0 to prevent additional keyframes from being generated)

Fixes warnings with deprecated function av_free_packet (which was
replaced by av_packet_unref)

This is to work around a Mesa issue that prevents copying
between RGB and RGBA textures. Other drivers seem to allow
this, even though it's technically not allowed by the GL
spec.

Closes jp9000/obs-studio#514

Closes jp9000/obs-studio#494

(Note: This commit also modified text-freetype2)

Prevents issues from being able to update files that may not be using
the current system encoding on windows.

Useful for two purposes:

1.) When many devices are hooked up to the system and used in separate
scenes, but only one device active at once is desired

2.) Allows users who are dependent on outputting audio to desktop to
disable that audio (via disabling that device) when the device isn't
being displayed

Closes jp9000/obs-studio#521

Add support for devices that can output in grayscale (Y800).

(Note: Also modified the obs-ffmpeg plugin module)

Allows the ability for frame data to pass 8-bit grayscale images (Y800
color format).

Closes jp9000/obs-studio#515

Closes jp9000/obs-studio#516

Certain older devices (such as the Decklink Duo and Quad) could not be
selected due to the fact that they rely on BMDDeckLinkTopologicalID for
their unique identifier rather than BMDDeckLinkPersistentID.

See http://forum.blackmagicdesign.com/viewtopic.php?f=12&t=33967

Closes jp9000/obs-studio#517

(Note: This commit also modified text-freetype2)

The implementation of get_modified_timestamp() did not check the return
value of stat(), so in case the check fails the values in the stats
structure can be any garbage on the stack and the value of
stats.st_mtime can change on every call. This can trigger a reload of
the image every second, even if the file was not actually modified.

Closes jp9000/obs-studio#520

Fixes the file integrity test when required files are placed in a path
containing non-english character encodings.

Closes jp9000/obs-studio#523

Added DJlive.pl - polish platform for DJ`s

Reported via clang:
warning: unused parameter 'data' [-Wunused-parameter]

(Note: This commit also modifies obs-filters and text-freetype2)

This simplifies writing of effects.  DrawMatrix is no longer necessary
because there are no sources that require drawing with a color matrix
other than async sources, and async sources are automatically processed
and don't defer their initial render stage to filters.

Originally this on by default, but then was changed to being off by
default because it was thought that there were permission issues, but it
turned out that the permission issues were a separate bug, so it's safe
to have this be default to on again.

195fe9a5 did not actually fix the issue; the code was misread and
the wrong section of code was disabled.  This actually forces a refetch.

Fixes a bug where the first effect filter on the freetype2 text source
wouldn't be properly applied

This is a fast/immediate solution to a possible bug with caching the DLL
versions for game capture hook addresses - may as well just reload game
capture hook addresses each time the program is run for the time being
just to be safe.  Load time will increase a little for the time being
but it's worth it to prevent any issues with game capture.

Since glyphs are rendered by FT as 8-bit gray levels bitmaps, it would
be a waste of memory to cache glyphs in a RGBA texture.

When a source window was not available, a red background was shown
instead. This was undesirable, and expected behavior would be for the
background to be transparent, enabling what exists behind the source
to be shown.

After source window closes, texture is still visible in preview until
the source window opens again.

These functions were mistakenly not marked as static.  They are not used
outside of their compiled object module files, therefore there's no
reason for them not to be static.

Modify: EU-North (London) => EU-West (London)
Add: EU-North (Amsterdam)
Closes jp9000/obs-studio#508