Issue #1338110 by aaron.r.carlton, oriol_e9g: Fixed remove the protected variable () if it's not used in tracker.test.

#915174 by sdboyer, sun: Remove pointless files[] declarations on files that are not declaring classes.

- Patch #992564 by wojtha: t() or format_plural() inside watchdog() function call in tracker and action module.

#438224 by dww, sun, netsensei, vordude, et al: 'Post comments without approval' permission name is completely misleading.

- Patch #880132 by bojanz: hook_schema() doesn't support compound foreign keys; inconsistent implementations in core.

#500866 by boombatower, solotandem: Remove t() from assertion messages in SimpleTest, so translators do not get 1000s of bogus strings.

Roll-back of node titles as fields. The Entity Translation module in
contrib can add this back, but for everyone else it creates a *huge* WTF.
Apologies for how late this is coming, but better now than post-alpha. :\

#538164 by scor, catch, linclark, effulgentsia, and yched: Convert Comment body as field. Yes, this is WAY past API freeze. :( But is a required follow-up for RDFa support.

- Patch #502190 by jhodgdon, stella, sun: hook implementation headers out of compliance with standards.

- Patch #301902 by TheRec, beeradb, catch, sun, skilip, alpritt, JacobSingh, Senpai: usability improvement: allow more users to see the node admin page.

Roll-back of #595084; type-hinting parameters at stdClass makes it so you can't ever pass in another type of class.

#192056 by effulgentsia, Dave Cohen, andypost, hswong3i, geodaniel, pwolanin, and dahacouk: Ensure user's raw login name is never output directly.

- Patch #122098 by Damien Tournoud, catch, mdixoncm: split comment.timestamp into 'created' and 'changed' columns, just like for nodes.

- Patch #572618 by effulgentsia, pwolanin, sun: all theme functions should take a single argument. Code clean-up and performance improvement. Woot.

#564394 by Berdir and Crell: Removed database BC layer. nah nah nah nah... hey hey hey... gooood byeeee...

- Patch by #565496 by dropcube, pwolanin: changed Allow dynamic attaching of other types of stuff to render() structures.

#497118 by chx, catch, pwolanin, JoshuaRogers, and Jacob Singh: Remove the function registry. While the hope was that this would result in improved performance for low-end hosts, it comes at the expense of critical development experience problems and less benefit than something like APC. Class registry remains intact to facilitate autoloading.

Of all the patches to accidentally commit without a message. :( Rolling back registry rip. Let's try that again.