perf: Rename 'perf trace' to 'perf script'

Free the perf trace name space and rename the trace to 'script' which is a
better match for the scripting engine.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 55f3b5d..26523c9 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1888,10 +1888,10 @@
 		usage_with_options(sched_usage, sched_options);
 
 	/*
-	 * Aliased to 'perf trace' for now:
+	 * Aliased to 'perf script' for now:
 	 */
-	if (!strcmp(argv[0], "trace"))
-		return cmd_trace(argc, argv, prefix);
+	if (!strcmp(argv[0], "script"))
+		return cmd_script(argc, argv, prefix);
 
 	symbol__init();
 	if (!strncmp(argv[0], "rec", 3)) {