ole32: Round the extected size in the marshal and moniker tests using the results of sizing a global, not a heap pointer.

The rounding isn't the same on Win9x, and the size being compared to
is that of a global handle.

The ME_TextBuffer structure is what is used to store the document (as
a linked list), so the ME_Document structure isn't being used.  There
was also a document pointer in the ME_Paragraph structure that was
also unused, so I removed it because it is probably related to this
used structure.

gdi32/tests: Only test the lowest byte of GdiRealizationInfo flags so that the test passes on Vista.

Ownerdraw status bar should update on receiveing a SB_SETTEXT message,
even if the 'text' parameter has not changed. Fix with conformance
test.