Improve trace in the unicode version.

dots or spaces.
Tweak the previous CreateDirectory() tests so we get more information
in case of a failure.

- Put OleInitialize and OleUninitialize in the main block.
- Move test_BindToObject before test_EnumObjects_and_CompareIDs.

CDROM_ScsiPassThrough().

correct on all platforms yet).

  overflows.
- Tests for this behaviour.

standard Variant* routines. Use this new function to properly copy &
de-reference the return value.

- Minor cleanups.

problems with destructors trying to access handles.

string from the error table.