TelegramQt/Utils: Improved portability of findDivider().
TelegramQt/Utils: Improved portability of findDivider().

Deprecated lrand48() replaced by rand().
Platform dependent types replaced by const-sized quint32/64.

Kaffeine/telegram-qt,KDE/telegram-qt,Kaffeine/telegram-qt,Kaffeine/telegram-qt,TemeV/telegram-qt,KDE/telegram-qt,TemeV/telegram-qt