Gmt module: Transformation to lowercase was not used then setting projection by name.

modules/gmt/modgmt_structs.h

@@ -207,8 +207,8 @@ struct gmt_projection
   proj=NOTDEF;
   std::string str=s;
   tolower(str);
-  if(projnames.end()==projnames.find(s)) return false;
+  if(projnames.end()==projnames.find(str)) return false;
-  proj=projnames[s];
+  proj=projnames[str];
   return true;
  }