CCleaner updated to version 3.19.1721

CCleaner has been updated to version 3.19.1721.
Changelog:
 -   Added option to skip User Account Control (UAC) warning.
 -   Added support for Firefox 13.0 beta.
 -   Moved Thunderbird to be cleaned separately.
 -   Improved Aurora History cleaning.
 -   Improved Google Chrome Saved Passwords cleaning.
 -   Improved Scheduled Tasks detection.
 -   Improved Uninstaller Installation Date on XP.
 -   Added cleaning for BitDefender.
 -   Improved detection for Malwarebytes Anti-Malware, VLC Media Player and Avast! Antivirus 6.
 -   Minor bug fixes.