CFile: Don't cast potential negative values to unsigned int
Merge pull request #6008 from fritsch/vfs-helix

CFile: Don't cast potential negative values to unsigned int
[skin] include last re-touched fixes
[autotools] Allow versiontag to be empty in configure and added a ouput variable APP_VERSION where its optional
[win32] handle @APP_VERSION@ appropriately
[android] temporarily ignore APP_VERSION_TAG for android:versionName
[win32] temporarily ignore APP_VERSION_TAG for FileVersion and ProductVersion
[osx/ios/atv2/packaging] - allow empty VERSION_TAG