[LyX/master] Add Qt-version info to LyX version string when a git repository is present.

[Stephan Witt]

commit a09eaf448ca8309556923a4a01aeb4a3cd430c1d
Author: Stephan Witt <sw...@lyx.org>
Date:   Sat Oct 18 16:06:33 2014 +0200

    Add Qt-version info to LyX version string when a git repository is present.

diff --git a/src/frontends/qt4/GuiAbout.cpp b/src/frontends/qt4/GuiAbout.cpp
index c75fec0..e9e88ea 100644
--- a/src/frontends/qt4/GuiAbout.cpp
+++ b/src/frontends/qt4/GuiAbout.cpp
@@ -129,11 +129,11 @@ static QString version()
        out << "\n";
        out << qt_("User directory: ");
        out << toqstr(makeDisplayPath(package().user_support().absFileName()));
-#ifdef DEVEL_VERSION
-       out << "\n";
-       out << toqstr(bformat(_("Qt Version (run-time): %1$s"), 
from_ascii(qVersion()))) << "\n";
-       out << toqstr(bformat(_("Qt Version (compile-time): %1$s"), 
from_ascii(QT_VERSION_STR))) << "\n";
-#endif
+       if (std::string(lyx_git_commit_hash) != "none") {
+               out << "\n";
+               out << toqstr(bformat(_("Qt Version (run-time): %1$s"), 
from_ascii(qVersion()))) << "\n";
+               out << toqstr(bformat(_("Qt Version (compile-time): %1$s"), 
from_ascii(QT_VERSION_STR))) << "\n";
+       }
        return res;
 }