[LyX/master] Do not load the xunicode package with TeX fonts

[Juergen Spitzmueller]

commit 740c247dfe9909e53280ee30fd6abbcd65f638a2
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Thu Dec 5 17:39:16 2013 +0100

    Do not load the xunicode package with TeX fonts

diff --git a/src/BufferParams.cpp b/src/BufferParams.cpp
index cc18ce1..0604a99 100644
--- a/src/BufferParams.cpp
+++ b/src/BufferParams.cpp
@@ -1958,7 +1958,8 @@ bool BufferParams::writeLaTeX(otexstream & os, 
LaTeXFeatures & features,
 
        // xunicode needs to be loaded at least after amsmath, amssymb,
        // esint and the other packages that provide special glyphs
-       if (features.runparams().flavor == OutputParams::XETEX)
+       if (features.runparams().flavor == OutputParams::XETEX
+           && useNonTeXFonts)
                lyxpreamble += "\\usepackage{xunicode}\n";
 
        // Polyglossia must be loaded last