Codycam: some 64 bit fixes
added B_PRIxOFF
bluetooth_server: some 64 bit fixes
Icon-o-matic: some 64 bit fixes
Mail: some 64 bit fixes
Magnify: some 64 bit fixes
MediaPlayer: 64 bit build fixes for an ugly use of BList.
PackageInstaller: some 64 bit fixes
People: some 64 bit fixes
PowerStatus: some 64 bit fixes
TextSearch: some 64 bit fixes
WebWatch: some 64 bit fixes
Diskprobe: some 64 bit fixes

* also warnings about comparisons between signed and non signed.
ShowImage: initialize rgb_color.alpha field.