Strip spaces.
Fix Issue 11175 - Format should support IUnknown classes.
Fix Issue 12464 - Inject imports to core.vararg on Posix when wrapping C-style variadic functions via AutoImplement.
Merge pull request #2094 from AndrejMitrovic/Fix12464

Issue 12464 - Inject imports to core.vararg on Posix when wrapping C-style variadic functions via AutoImplement.
Merge pull request #2090 from AndrejMitrovic/Fix11175

Issue 11175 - Format should support IUnknown classes