When reading EmfPlusRecordTypeDrawImagePoints, handle the variant where
points are stored as 16-bit integers instead of floats correctly.
Found via valgrind on loading bugdoc from fdo#42252.

Thanks to Maxime de Roucy for the hint that the "cmpfunc" type doesn't exist.

This reverts commit 4147de18.

...instead of arbitrarily returning certain values when the requested
information is not available.

This reveals a problem in strmunx.cxx that is apparently a regression introduced
with 4a086fca "fix SvStream to not require a
custom open or lstat method."

Also solver/$INPATH is subset of */$INPATH.

Use \ instead of / in path, but more importantly,
use relative path, because '-' in path caused build error.
Path was truncated right before the '-'. We could have put it
between quotes, but then the SO_ACTIVEX_TLB_DIR define would not
be substituted, so instead of hacking of the rc, I chose this
solution.

e

...something better is required (getting rid of the solar mutex?).