[LyX/master] Allow $$s converter substitution if 'latex' flag

[Scott Kostyshak]

commit 731b8610af07b3f4da5fc79ceedfb8e79b75787f
Author: Scott Kostyshak <skost...@lyx.org>
Date:   Sat Jan 25 13:16:05 2014 -0500

    Allow $$s converter substitution if 'latex' flag
    
    A more general patch will be committed for 2.2 that
    centralizes replacement of $$s in startScript().

diff --git a/src/Converter.cpp b/src/Converter.cpp
index a27d742..a3df839 100644
--- a/src/Converter.cpp
+++ b/src/Converter.cpp
@@ -403,6 +403,7 @@ bool Converters::convert(Buffer const * buffer,
                        command = subst(command, token_from, "");
                        command = subst(command, token_latex_encoding, buffer ?
                                buffer->params().encoding().latexName() : 
string());
+                       command = libScriptSearch(command);
                        LYXERR(Debug::FILES, "Running " << command);
                        if (!runLaTeX(*buffer, command, runparams, errorList))
                                return false;