expire 7.x-2.0-beta2

Features:

• Added possibility to expire voted entity (for VotingAPI).
• #1082860: Support for expiring managed files on update

Changes:

• #2029263: Move Cache Expiration to 'System' area instead of 'Development'
• Change function name in expire.api.php to an existing one.
• Restore expire_print_r() function for compatibility with modules that may use this function for debug purposes (like Purge module does).