except r2924, which was merged from branches/zip r2866 to branches/5.1
and except r2879 which was merged separately by Calvin:

  ------------------------------------------------------------------------
  r2902 | vasil | 2008-10-28 12:10:25 +0200 (Tue, 28 Oct 2008) | 10 lines

  branches/5.1:

  Fix Bug#38189 innodb_stats_on_metadata missing

  Make the variable innodb_stats_on_metadata visible to the users and
  also settable at runtime. Previously it was only "visible" as a command
  line startup option to mysqld.

  Approved by:    Marko (https://svn.innodb.com/rb/r/36)
  ------------------------------------------------------------------------
  r2929 | marko | 2008-10-29 21:26:14 +0200 (Wed, 29 Oct 2008) | 13 lines

  branches/5.1: dtype_get_sql_null_size(): return the correct storage
  size of a SQL NULL column. (Bug #40369)

  When MySQL Bug #20877 was fixed in r834, this function was
  accidentally modified to return 0 or 1. Apparently, the only impact of
  this bug is that fixed-length columns cannot be updated in-place from
  or to SQL NULL, even in ROW_FORMAT=REDUNDANT.  After this fix,
  fixed-length columns in ROW_FORMAT=REDUNDANT will have a constant
  storage size as they should, no matter if NULL or non-NULL.  The bug
  caused fixed-length NULL columns to occupy 1 byte.

  rb://37 approved by Heikki over IM.
  ------------------------------------------------------------------------