Remove MinGW lrint hack. It has been in mingw-runtime at least since version 2.4
Remove MinGW lrint hack.
It has been in mingw-runtime at least since version 2.4

git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@9594 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg