Remove upstreamed patches. Refreshed other ones.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

No idea why.

Patch submitted upstream:
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200503090023.29418-1-rosenp@gmail.com/

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Removed the Makefile references.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Drop upstreamed libfdk-aac patches.

ffserver was removed in 4.0. ffmpeg does not have a replacement.

Signed-off-by: Ian Leonard <antonlacon@gmail.com>

The patch created patch files in the ffmpeg build directory, which did
absolutely nothing. Properly backported them.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Before:

prefix=/usr
exec_prefix=${prefix}
libdir=/usr/lib
includedir=/usr/include

After:

prefix=/usr
exec_prefix=/usr
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Numbered the other patch file.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Signed-off-by: Ian Leonard <antonlacon@gmail.com>

Drop fminf patch; fminf emulation is no longer included upstream.

Signed-off-by: Ian Leonard <antonlacon@gmail.com>

Signed-off-by: Ted Hess <thess@kitschensync.net>