[1.2.X] Fixed #14038 -- Added information to release notes and version...

[1.2.X] Fixed #14038 -- Added information to release notes and version changed|added markers to documentation additions for the new template loeaders API introduced in version 1.2. Thanks 3point2 for the report.

Backport of [15309] from trunk

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15310 bcc190cf-cafb-0310-a4f2-bffc1f526a37