doc/platform: Update to reflect current MSVC build situation

Also update the C99 converter URL, since it uses GitHub Releases
to host the binaries now.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
avcodec/qpeg: make qpeg_decode_inter() noinline

This should workaround an apparent mis-compilation with gcc 4.2 on BSD
The function is rarely called and not inlining should have no speed
effect

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffserver: factorize opt_audio/video_codec

Simplify.
doc/ffmpeg: use @command{} for programs mentioned in -override_ffserver
avutil/log: check that len is within the buffer before reading it

Fixes out of array read
Fixes: asan_heap-oob_19d6979_6857_mmw_deadzy.ogg
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>