move class attributes

git-svn-id: http://haxe.googlecode.com/svn/trunk@6163 f16182fa-f095-11de-8f43-4547254af6c6
throw exception if EReg.matched is used without previously matching (fixed issue #1474)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6164 f16182fa-f095-11de-8f43-4547254af6c6
copy :build metadata to abstract implementation class

git-svn-id: http://haxe.googlecode.com/svn/trunk@6165 f16182fa-f095-11de-8f43-4547254af6c6