lpc: use -ffast-math and -funroll-loops
Merge branch 'lpc' into codecs-fixes-20141105
lpc10: use -ffast-math and -funroll-loops
Merge branch 'lpc10' into codecs-fixes-20141105
melp: use -ffast-math and -funroll-loops
Merge branch 'melp' into codecs-fixes-20141105
opus: use -ffast-math and -funroll-loops
Merge branch 'opus' into codecs-fixes-20141105
silk: use -ffast-math and -funroll-loops
Merge branch 'silk' into codecs-fixes-20141105
speex: use -ffast-math and -funroll-loops
Merge branch 'speex' into codecs-fixes-20141105