Improve API query RevDel handling
* ApiQueryDeletedrevs, ApiQueryFilearchive, ApiQueryRecentChanges, and
ApiQueryWatchlist will now return entires where fields have been
revision-deleted. "Hidden" indicators will be provided as appropriate.
* ApiQueryImageInfo, ApiQueryLogEvents, ApiQueryRevisions,
ApiQueryContributions will now return field values in addition to the
"hidden" indicators when the requesting user has the necessary rights.
* Modules that return "hidden" indicators will now also return a
"suppressed" indicator.
* ApiQueryImageInfo will now return info for DELETED_FILE file revisions
if the requesting user has the 'deletedtext' right.
* ApiQueryLogEvents, when searching by user or title, will now return
entries where the user or action are revision-deleted if the
requesting user has the 'deletedhistory' right.
* ApiQueryContributions now uses the correct user rights rather than
'hideuser' to determine when to show contributions where the username
was revision-deleted.
* ApiQueryContributions will now indicate when the revision text is
hidden.
* Fix a bug in ApiQueryDeletedrevs found during testing where specifying
the "content" prop along with the "tags" prop or "drtag" parameter
would cause an SQL error.
* Fix various PHP warnings in ApiQueryFilearchive caused by the lack of
ArchivedFile::selectFields() fields.
* ApiQueryImageInfo::getInfo's $metadataOpts parameter has been renamed
$opts, and now may have an option to indicate the user to use for
RevDel visibility checks.
* ApiQueryWatchlist now properly uses the actual user's rights for
checking whether wlprop=patrol is allowed, rather than using the
wlowner's rights.
Bug: 27747
Bug: 27748
Bug: 28261
Bug: 34926
Bug: 48966
Change-Id: Idec2199976f460e1c73a26d0717e9fc4ab8042bb