implement mime exceptions to "use desktop open" so that we can use evince and pass page and search string parameters for pdf,ps and dvi even when all other mime types are passed to xdg-open

src/query/reslistpager.cpp

@@ -236,7 +236,7 @@ void ResListPager::displayDoc(RclConfig *config, int i, Rcl::Doc& doc,
     string apptag;
     doc.getmeta(Rcl::Doc::keyapptg, &apptag);
 
-    if (!config->getMimeViewerDef(doc.mimetype, apptag).empty()) {
+    if (!config->getMimeViewerDef(doc.mimetype, apptag, false).empty()) {
 	linksbuf << "<a href=\"E" << docnumforlinks << "\">"  
 		 << trans("Open") << "</a>";
     }