include config.h if available

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@2405 0c269be4-1314-0410-8aa9-9f06e86f4224

common/JackGlobalsClient.cpp

@@ -17,6 +17,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 */
 
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
 #include "JackGlobals.h"
 
 // OSX