This is the wrong configuration format for such a feature, and the wrong interface. We already have certain per-namespace permissions in the Title class, and we didn't need to add extra formal parameters to a whole lot of User methods in order to get them. The feature should be implemented wholly in Title, and the concept of user rights should remain relatively simple and easy to understand, and independent of its many applications, i.e. a user either has a right or doesn't. Rights are just a tool for developing access policies; the complexity should be in the caller.
The revert was mostly done by hand, since there were a lot of conflicts. I tried to preserve the gist of conflicting changes in r102187 and r102873. The test changes are not simple reverts, rather I just edited out the per-namespace tests. I reverted the followups r92589 and r104310.
* User::getRights(), User::isAllowed() and User::getGroupPermissions now optionally accept a namespace parameter. If not set, it will check whether the user has the right for all namespaces.
* Anything that uses Title::getUserPermissionsErrorsInternal() automatically supports per-namespace permissions. This includes Title::getUserPermissionsErrors and Title::(quick)UserCan.
* Fix tests that set User::mRights
The next step would be to change all User::isAllowed() to Title::quickUserCan or pass the namespace to User::isAllowed().
This is not merged with the r86131 change to Article::getParserOptions() since I don't see the point for the new function yet.
Reenabled its test ArticleTablesTest which was disabled in r85618
* Block.php: Set mExpiry to the value we store in the database, so that Block::equals() returns true. Fixes BlockTest::testInitializerFunctionsReturnCorrectBlock.
* In Title::checkUserBlock(): Convert message parameters to plain strings to make strict comparisons work. Fixes TitlePermissionTest::testUserBlock().
* ApiBlock.php: Follow-Up r85166, add 'Confirm' parameter to data array. Fixes ApiBlockTest::testMakeNormalBlock().
* ApiQueryTest.php: Use $wgMetaNamespace instead of $wgSitename to account for customizations.
* RandomImageGenerator.php: Use default value for constructor param to prevent fatals.
* ApiTestCaseUpload.php:
** Fix undefined variable $fileName.
** Remove stray ini_set statements, they don't belong there. Especially ini_set( 'error_reporting', 1 ) will effectively disable all reporting, which makes errors hard to track.
* ArticleTablesTest.php: Put testbug14404() in group Broken, as the fix for the bug has been reverted in r83868.
