This patch implement own member filling with supertype scope. Before this patch JDR relied on
Idea hierarchy resolver.
This patch does two things:
* copies FunctionDescriptors from supertype scopes
* rewrites containingDeclaration similary to how it is done in previous patch
Patch is incomplete, in particular properties are not yet initialized properly, code needs cleanup,
however the most important part of refactoring is done, and tests pass.
Stepan Koltsov
9248cf9659