Propose a second more complete patch to Fix #38

This is another patch to fix issue #38 (closed),

that adds the defined in the chameleon_config.h.in as it should be done, and simplify the calls to RUNTIME_iteration_push by always calling it, and changing their definition internally to each runtime, instead of globally at the chameleon level.

include/chameleon_config.h.in

@@ -42,7 +42,10 @@
 #cmakedefine CHAMELEON_USE_CUBLAS
 #cmakedefine CHAMELEON_USE_CUBLAS_V2
 
-/* Simulating */
+/* Simulation */
 #cmakedefine CHAMELEON_SIMULATION
 
+/* Tracing support */
+#cmakedefine CHAMELEON_ENABLE_TRACING
+
 #endif  /* CHAMELEON_CONFIG_H_HAS_BEEN_INCLUDED */