Item11833: Remove the redundant and confusinf Render/FormField package, collapsing it into FORMFIELD - it isn't useful outside that context. Correct support for title expansion so it is consistent with 1.1.x. Fix ! nops in FORMFIELD. Add a loaded class check to Foswiki.pm to prevent a die when an internal package is load-checked, which was borking the unit tests.

git-svn-id: http://svn.foswiki.org/trunk@17474 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
Item10694: simplify regex used for matching definition lists, to stop it crashing into perl internal limits. I have no idea why it was so complex in the first place, it didn't need to be.

git-svn-id: http://svn.foswiki.org/trunk@17475 0b4bb1d4-4e5a-0410-9cc4-b2b747904278