Added generic method CRM_Core_PseudoConstant::get(). CRM-12464

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Added checks for valid array keys. CRM-12464

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* CRM-12464:
  http://issues.civicrm.org/jira/browse/CRM-12464
Added support for 'localize' param in CRM_Core_PseudoConstant::get(). CRM-12464

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Added support for more optionValue types in get() method, with corresponding tests. Toward CRM-12464.

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Refactor gender pseudoconstant to use generic get method CRM-12464

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* CRM-12464: Search improvements in 4.4
  http://issues.civicrm.org/jira/browse/CRM-12464
Merge pull request #4 from twomice/search

Search