Merge pull request #20492 from colemanw/dedupeRename

CRM/Activity/BAO/Activity.php

CRM/Activity/Import/Parser/Activity.php

CRM/Contact/BAO/Contact/Utils.php

CRM/Contact/Form/Contact.php

CRM/Contact/Form/DedupeRules.php

CRM/Contact/Form/Merge.php

CRM/Contact/Import/Form/MapField.php

CRM/Contact/Page/AJAX.php

CRM/Contact/Page/DedupeFind.php

CRM/Contact/Page/DedupeRules.php

CRM/Contribute/BAO/Contribution.php

CRM/Contribute/Import/Form/MapField.php

CRM/Contribute/Import/Parser/Contribution.php

CRM/Dedupe/BAO/DedupeException.php

CRM/Dedupe/BAO/DedupeRule.php

CRM/Dedupe/BAO/DedupeRuleGroup.php

CRM/Dedupe/Finder.php

CRM/Dedupe/Merger.php

CRM/Event/BAO/Participant.php

CRM/Event/Form/ManageEvent/Registration.php