Fix 1bpp -> 16bpp image conversion.
* libfreerdp/codec/color.c (freerdp_mono_image_convert): Update the
1bpp -> 16bpp conversion code to reflect the fact that the foreground
and the background colors are in GDI representation now.
Fix erronous use of colors in gdi_patblt().
* libfreerdp/gdi/gdi.c:
(gdi_patblt): Fix a call to freerdp_mono_image_convert() which was
still passed colors in drawing order representation instead of GDI
representation.