CRM-13786 - Fix calc of membership end date when join date is in the past (for fixed period memberships).

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* CRM-13786: Membership End Date not calculated properly for fixed period MembershipTypes
  http://issues.civicrm.org/jira/browse/CRM-13786
Merge pull request #2060 from davecivicrm/CRM-13876c

CRM-13786 - Fix calc of membership end date when join date is in the pas...
Merge pull request #2061 from civicrm/4.3

4.3
CRM-13807 - Verify BAO exists in api getBAO
Merge pull request #2063 from colemanw/4.4

CRM-13807 - Verify BAO exists in api getBAO
CRM-13807 - Fix last to commit to getBAO and add unit test
Merge pull request #2064 from colemanw/4.4

CRM-13807 - Fix last to commit to getBAO and add unit test
CRM-13807 - Add comments and null test
Update version to 4.4.3
CRM_Core_BAO_UFGroup - Fix warning with unknown provider
Merge pull request #2066 from totten/4.4-ufgroup-warning

CRM_Core_BAO_UFGroup - Fix warning with unknown provider