added Compiler.allowPackage (fixed issue #1603)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6432 f16182fa-f095-11de-8f43-4547254af6c6
[As3] generate ; after } in blocks (fixed issue #1672)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6433 f16182fa-f095-11de-8f43-4547254af6c6