Added "DEPRECATED" comment in a couple of CRM_Core_PseudoConstant methods. CRM-12464.

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Merge branch 'search' of github.com:twomice/civicrm-core into search
Refactored Contact Page Summary tab to use CRM_Core_DAO::buildOptions() method. CRM-12464

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Added xml metadata for group_id column in various tables. CRM-12464

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Refactored out of CRM_Core_PseudoConstant: billingMode(). CRM-12464

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Merge branch 'search' of github.com:twomice/civicrm-core into search