msi: Do not crash in MsiGetUserInfo if org, user or serial are not present, instead return USERINFOSTATE_ABSENT.

to be able to make use of FileStructW and avoid W->A->W roundtrips if
possible.

Based on a patch by Aric Stewart.
Also get rid of _ILCreateFromFindDataA and _ILCreateFromPatA.

Add _ILIsUnicode as a simple pidl test.

Implement _ILGetTextPointerW, though it does little now.
Handle the LPWSTR from _ILGetTextPointerW in _ILSimpleGetText and
_ILSimpleGetTextW.

msi: Register fonts with full target paths as applications can and will install fonts to places other than the windows/fonts directory.

This avoids server round-trips for all file I/O.

Allows moving the FD_FLAG_OVERLAPPED support to the generic
get_handle_fd request handling.

Don't bother to request write access.

Make fonts and the other measurements the correct size in relation to
the actual printer resolution instead of thinking it uses the same
resolution as the display.  Before fixed sized (and for most printer
resolutions way to small) margins where used and the font size was
taken directly from the screen font independent of the actual printer
resolution, resulting in a completely unreadable micro text on most
printouts.