update MediaInfo to v0.7.63
update ZenLib to v0.4.29
update icl13.diff
update lcms2 to dd44baf
Fix typos in comments.
Reduce variable scope.
Use %d for integer instead of %i for consistency.
CIfo: more safe file opening

Check all functions' returns and reject certainly invalid IFO
files now. We could easily crash here before.
CIfo: more safe file saving
CMpcAudioRenderer: fix a warning
CBaseMuxerOutputPin: fix a warning

The casted value is basically si->dwOffset, which is DWORD
CWebClientSocket: fix a warning
CRenderersData: fix possible integer overflow