Revert "actually disable C4995 and C4996 for udf.cpp"

This reverts commit 03ca3eff5fccbfe6bfc1583789d4fe91af8b1900.
update TreePropSheet from TortoiseSVN
fix warning
do while (0) (WIP)
initialize variables
reduce variable scope
remove unused var
add a .gitattributes file
normalize line endings
version.sh: fix comment
Properly set the error code when gccbuild.bat fails.

Because gccbuild.bat wasn't setting any error code when ffmpeg compilation failed, any compilation error wasn't detected by Visual Studio.
update ffmpeg (n0.8-17953-g8ac8f04)
Work around a libavresample crash
n0.8-17993-g918b411