re-unify unbound context type parameters after parsing the pattern (fixed issue #1800)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6624 f16182fa-f095-11de-8f43-4547254af6c6
Map documentation (and whitespace) fix

git-svn-id: http://haxe.googlecode.com/svn/trunk@6625 f16182fa-f095-11de-8f43-4547254af6c6