winspool: Revise EnumPrinterDriversW to fix the incorrect handling of 'all'. EnumPrinterDriversA is similarly fixed by using EnumPrinterDriversW.

These OSs have different behaviour w.r.t. quotes in path names and
don't ignore the rest of the path outside of the quotes.

winex11.drv: Make sure that the selectionAcquired flag has been set before returning from X11DRV_AcquireClipboard.

X11DRV_CLIPBOARD_UpdateCache depends on selectionAcquired being set if
the current process is the selection owner, otherwise it will defer to
getting the clipformats from X, manufacturing extra formats that the
app may not be expecting, having just set the formats itself. Worse
still, since selectionAcquired is set in another thread this behaviour
is not predicatable and it may sometimes use the clipformats already
set and other times defer to X.

oleaut32: Remove LPVOID variables in olefont tests and pass IFont pointers into OleCreateFontIndirect directly.

In many places the assignment of the LPVOID variable into the
corresponding IFont * variable has been forgotten.

There are some failures in this test on Win7 that appear to be related to the
initial viewport. Perhaps this trace will help narrow it down.

It appears this is fixed on Vista/Win7 to be consistent with
DeleteVertexShader(). Match the more consistent behaviour of Vista/Win7 and
mark the previous behaviour as broken.

This is essentially a copy of test_file_name_information().

winspool: Implement GetPrinterDriverA with GetPrinterDriverW, notably using the larger sizes, which fixes a bug in printing with Acrobat Reader 9.2.

winspool: When retrieving PRINTER_INFO_7, the lack of a directory service print queue object is represented with a NULL pointer and a successful return, not an error return.