Make cProfile the default where available (Python 3)

Author: Flamefire

scorep/__main__.py

@@ -22,7 +22,10 @@ def scorep_main(argv=None):
     no_default_threads = False
     no_default_compiler = False
     no_instrumenter = False
-    instrumenter_type = "profile"
+    if sys.version_info.major >= 3:
+        instrumenter_type = "cProfile"
+    else:
+        instrumenter_type = "profile"
 
     for elem in argv[1:]:
         if parse_scorep_commands: