Merge pull request #50 from nseam/master

Build fixes
Changed message to be more specific that files should be write accessible by Apache user.
Added two scripts for enabling search features.
Phing script build improvements, removing enabling common modules as are already enabled by the profile it-self.
Adding ads_locations to ads.info.
Set the public/private dir after the build.
Adding countries as it is required by ads_locations.
Merge pull request #53 from nseam/master

ADS profile enhancement
ADS profile will now do variable_set for all drush variables passed to drush site-install by variables.NAME=VALUE [ADS-1]