wintrust: Implement CryptCATAdminAddCatalog, CryptCATAdminReleaseCatalogContext and CryptCATAdminReleaseContext.

Based on work done by Maarten Lankhorst.

The formatting rectangle is set with EM_SETRECT, and retrieved with
EM_GETRECT, so it corresponds to rcFormat in the code.  This defines the
area that the richedit control should draw the text so that it is
offset by the top-left corner of the formatting rectangle, and clipped
so that it doesn't draw past the bottom or right hand side.  Thus this
is important for implementing windowless richedit controls to not
interfere with the rest of the window.

These tests show that there are problems with the way formatting
rectangles are currently implemented in wine.

There were several methods that do not have a HRESULT for a return
value, so returning E_NOTIMPL is not appropriate. For all the BOOL
return values FALSE was returned to indicate the operation was not
performed.

Includes a few record tests with a NULL buffer.

x11drv: Allow ActivateKeyboardLayout to set the keyboard for the thread and GetKeyboardLayout to return the stored keyboard.

x11drv: If a keyboard layout is an IME only check the loword when comparing to the x11 keyboard layout.

Now that all the certificate extensions/properties/whatnot are shown,
the if check is unnecessary.