implementations of hook_civicrm_links never require return value
implementations of hook_civicrm_validateForm never require return value
hook_civicrm_validate is deprecated, so ignore
implementations of hook_civicrm_aclWhereClause never require return value
implementations of hook_civicrm_alterSettingsMetaData never require return value
update docs
Merge branch 'master' into civicrm-4.5
Merge branch 'master' into civicrm-4.5
Merge pull request #1 from christianwach/civicrm-4.5

CiviCRM 4.5 Updates