The recently introduced code had a bug where it passed the wrong
values into apartment_findfromtype to find the main apartment. Since
this is now the only way the function is used, fix this bug by
changing apartment_findfromtype to apartment_findmain, which only
finds the main apartment.

Same structures and functions can be used for both StringList and RecordList.

oleaut32: GetRefTypeOfImplType(0) on TKIND_DISPATCH typeinfos should always return an href to IDispatch.

Add tests that show the strange behaviour of IStream_Read returning S_OK 
instead of an error code.

There should be one host apartment per apartment. Existing apartments 
should not be re-used, except in the case of the main apartment.

comctl32: Trying to blend an image without a mask causes problem, especially if the background is white.