makepanda: also use -undefined dynamic_lookup for VRPN for now

makepanda/makepanda.py

@@ -1026,6 +1026,8 @@ if (COMPILER=="GCC"):
             LibName("ASSIMP", "-undefined dynamic_lookup")
         if not PkgSkip("OPENEXR"):
             LibName("OPENEXR", "-undefined dynamic_lookup")
+        if not PkgSkip("VRPN"):
+            LibName("VRPN", "-undefined dynamic_lookup")
 
     if GetTarget() == 'android':
         LibName("ALWAYS", '-llog')