xfreerdp: fix glyph index primary drawing order

The fOpRedundant field of the GlyphIndex primary drawing order
(MS-RDPEGDI, chapter 2.2.2.2.1.1.2.13) was neglected which resulted in some
severe text rendering errors.
Merge pull request #2178 from nfedera/fix-2014-10-29-01

xfreerdp: fix glyph index primary drawing order