make --quiet option to suppress various info messages

When --quiet is defined messages such as'RAPL device for cpu 0' and
'Leaving PowerTOP' are not expected to be printed.  This change makes
them to be printed to stderr, that the --quiet is redirecting to
/dev/null.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

src/cpu/rapl/rapl_interface.cpp

@@ -39,7 +39,7 @@
 #define RAPL_DBG_PRINT(...)	((void) 0)
 #define RAPL_ERROR_PRINT(...) ((void) 0)
 #endif
-#define RAPL_INFO_PRINT printf
+#define RAPL_INFO_PRINT(format, m) fprintf(stderr, format, m)
 
 #define MAX_TEMP_STR_SIZE	20
 
@@ -134,8 +134,7 @@ c_rapl_interface::c_rapl_interface(const char *dev_name, int cpu) :
 			closedir(dir);
 		}
 
-		RAPL_INFO_PRINT("RAPL Using PowerCap Sysfs : Domain Mask %x\n",
-														rapl_domains);
+		RAPL_INFO_PRINT("RAPL Using PowerCap Sysfs : Domain Mask %x\n", rapl_domains);
 		return;
 	}
 

src/main.cpp

@@ -500,7 +500,7 @@ int main(int argc, char **argv)
 	}
 	if (!auto_tune)
 		endwin();
-	printf("%s\n", _("Leaving PowerTOP"));
+	fprintf(stderr, "%s\n", _("Leaving PowerTOP"));
 
 	end_process_data();
 	clear_process_data();