Issue #1326618 by Albert Volkman, ykhadilkar, oriol_e9g, daniel_j, xenophyle: API docs cleanup for locale module

Issue #1627006 follow-up by YesCT, webflo, Gábor Hojtsy: CMI conversion and minor followups to 'Collect project information for translation update'.

Issue #1627006 by Sutharsan, Berdir, lazysoundsystem, andypost, webflo, jepSter, MantasK, Gábor Hojtsy: Collect project information for translation update.

Issue #1635084 by webflo, vasi1186: Added Track import status of files in the locale .po file directory.

Issue #1630264 by vasi1186, fubhy, Gábor Hojtsy: Move field language fallback code from Locale to Field and field language handling for nodes to Node.

- Patch  #1468930 by dawehner, Gábor Hojtsy, plach, das-peter, fubhy: clean up and move the code for the negotiation functionality from locale module to language module.

- Patch #1445004 by Sutharsan, Gábor Hojtsy, roderik, andypost, brantwynn: Implement customized translation bit on translations.

- Patch #532512 by Gábor Hojtsy, andypost, no_commit_credit: fixed Plural string storage is broken, editing UI is missing.

- Patch #1222106 by Gábor Hojtsy, plach, xjm: Unify language negotiation APIs, declutter terminology.

- Patch #1272840 by attiks, Gábor Hojtsy, pp, Dave Reid, catch: upgrade path for language domains and validation.

Issue #746240 by c960657, Gábor Hojtsy: Fixed Race condition in locale() - duplicates in {locales_source()}.

This reverts commit a7f72e66.

Revert "Issue #1272840 follow-up by Dave Reid: Fixed broken upgrade path for language domains and validation."

This reverts commit 91d6b144.

Issue #1272840 follow-up by Dave Reid: Fixed broken upgrade path for language domains and validation.

- Patch #1416392 by Gábor Hojtsy, plach, rvilar: clean up language (types) bootstrap function naming and documentation.

- Patch #1431040 by Gábor Hojtsy: rename LOCALE_LANGUAGE_NEGOTIATION_* constants to LANGUAGE_NEGOTIATION_*.

- Patch #1280538 by fastangel, Gábor Hojtsy, plach: Language negotiation UX: default the path prefix setting on installation so that it actually works right away.

Issue #1301040 by Gábor Hojtsy: Move language listing functionality from locale.module to a new language.module.

Issue #1301460 by loganfsmyth, good_man, Gábor Hojtsy, xjm: Decouple domain/path language negotiation storage from language config storage.

Issue #1323176 by Gábor Hojtsy: Decouple UI translation language information from language list schema.

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

- Patch #1097100 by quicksketch, boombatower, claar: remove all 7xxx update functions and tests (D6 to D7 upgrade path).