Mixin classes in parent namespace can now be properly included in a class


git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@1948 404ce1b2-830e-0410-a2e2-b09542c77caf
Code clean-up

git-svn-id: http://svn.code.sf.net/p/angelscript/code/trunk/sdk@1949 404ce1b2-830e-0410-a2e2-b09542c77caf