Fix nonstandard header comments

CRM/Activity/Page/AJAX.php

CRM/Badge/BAO/Badge.php

CRM/Badge/Page/AJAX.php

CRM/Campaign/Page/AJAX.php

CRM/Case/Page/AJAX.php

CRM/Case/XMLRepository.php

CRM/Contact/Import/Form/DataSource.php

CRM/Contact/Import/ImportJob.php

CRM/Contact/Page/AJAX.php

CRM/Contribute/Page/AJAX.php

CRM/Core/BAO/ActionLog.php

CRM/Core/BAO/ActionSchedule.php

CRM/Core/BAO/Block.php

CRM/Core/BAO/CustomValueTable.php

CRM/Core/BAO/Discount.php

CRM/Core/BAO/IM.php

CRM/Core/BAO/LocationType.php

CRM/Core/BAO/MailSettings.php

CRM/Core/BAO/OpenID.php

CRM/Core/BAO/OptionGroup.php