MidiPlayer: fixes 64 bit warnings
MailPreferences: fixes 64 bit warnings
ShorcutsPreferences: fixes 64 bit warnings
shortcut_catcher: fixes 64 bit warnings
Chart: fixes 64 bit warnings
Clock: fixes 64 bit warnings
mandelbrot: fixes 64 bit warnings
pop3: fixes 64 bit warnings
imap: fixes 64 bit warnings
match_header and spam_filter: fixes 64 bit warnings
Cortex: fixes 64 bit warnings
multi_audio.media_addon: fixes 64 bit warnings
mixer.media_addon: fixes 64 bit warnings
opensound.media_addon: fixes 64 bit warnings
tone_producer_demo: fixes 64 bit warnings
preview print driver: fixes 64 bit warnings
ipp and lpr print transports: fixes 64 bit warnings
spider screen_saver: fixes 64 bit warnings
canna input method: fixes 64 bit warnings

* ugly, this code is not really fixable anyway.
silicon_image_3112: fixes 64 bit warnings