Issue #931512 by ahwebd, catch, tobiasb: Fixed Node body 'description' and 'required' are missed on nodes upgraded from D6 to D7.

Issue #1017672 by catch, q0rban: Fixed D6 to D7 update process permanently deletes comment bodies and other data, and throws fatal SQL errors.

Issue #1017672 by catch, q0rban: D6 to D7 update process permanently deletes comment bodies and other data, and throws fatal SQL errors.

- Patch #1017672 by catch, q0rban: D6 to D7 update process permanently deletes comment bodies and other data, and throws fatal SQL errors.

#926794 by ksenzee, moshe weitzman, Jody Lynn: Fixed revisions of unpublished nodes lose their body field on upgrade.

#358437 follow-up by David_Rothstein, sun, chx: Disallow invalid text format IDs; force 0 and non-existant formats to NULL.

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

  form input in the 'node type' edit form was way too harsh (affects the
  display of all 'trimmed / summary_or_trimmed' formatters on all text
  fields in all view modes), and irrelevant for text fields on non-node
  entities, which are currently all blocked to 'trim to 600 chars'.

   * Added field formatter settings for 'text_trimmed' and 'text_summary_or_trimmed' formatters
   * Removed 'teaser_length' settings for node types
   * Added upgrade path for 'teaser_length' variable in node_update_7011()
   * Fixed a test

#553306 by catch, bec, yched, zzolo, mradcliffe, webchick, plach: The rest of remove redundant body and title node attributes & UI. The rest was accidentally committed in http://drupal.org/cvs?commit=363156. Sorry. :(

- Patch #684774 by andypost, sun: critical bug: block visibility settings cannot be properly extended.

#211182 by Damien Tournoud, David_Rothstein, clemens.tolboom, scor, hunmonk, et al: Allow updates to specify dependencies to ensure they run in a predictable order.

- Patch #563106 by adrian, David_Rothstein: more upgrade path fixes to help contrib updates make progress.

#563106 by quicksketch, scor, andypost, ctmattice1, catch, yched, adrian: Fix critical upgrade path bugs from Drupal 6 to Drupal 7

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. :\

- 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.

- Patch #11218 by David_Rothstein, sun, quicksketch, duncf, awood456, dropcube, mgifford | pwolanin, dww, RobRoy, Crell, webchick, beginner, ray007, bjaspan, chx, Gábor Hojtsy, Steven, Dries, lutegrass, sym, guardian, matt2000, geerlingguy, SeanBannister, matt westgate, com2, praseodym: allow default text formats per role, and integrate text format permissions.