rules 6.x-1.5

Changes since 6.x-1.4:

• Issue #343403 by rfsbsb: Added condition: Content has term
• #1281158 patch by kari.kaariainen: Fix misspellings: whose instead of whos.
• #1250384 patch by mikeytown2: Strict warning: Only variables should be passed by reference in rules_core_action_execute() .
• #1208562 patch by catch: Avoid variable_set() in rules_get_rule_set().
• #448922 patch by hanoii: Make recipient input of the mail action expandable.
• #1080402 patch by Matt Fitzpatrick: Rules won't delete an URL alias when system path is empty
• #903246 Fatal error: Call to undefined function rules_include().
• #1004712 twitter action failing with PHP 5.3
• Removing translation directories
• Stripping CVS keywords
• #1036776 patch by AlexisWilke: fixed regex condition to properly escape the regex.