Send v8 breakpoints in parallel

Potentially saves huge amounts of roundtrips

package.json

@@ -71,7 +71,7 @@
         "c9.ide.find": "#6cc6d3379d",
         "c9.ide.find.infiles": "#72582de3cd",
         "c9.ide.find.replace": "#44772dd796",
-        "c9.ide.run.debug": "#c7f1ed5d5d",
+        "c9.ide.run.debug": "#0f244ecdfc",
         "c9.automate": "#47e2c429c9",
         "c9.ide.ace.emmet": "#6dc4585e02",
         "c9.ide.ace.gotoline": "#a8ff07c8f4",