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/perf.c b/tools/perf/perf.c
index cdd6c03..595d0f4 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -323,7 +323,7 @@
 		{ "top",	cmd_top,	0 },
 		{ "annotate",	cmd_annotate,	0 },
 		{ "version",	cmd_version,	0 },
-		{ "trace",	cmd_trace,	0 },
+		{ "script",	cmd_script,	0 },
 		{ "sched",	cmd_sched,	0 },
 		{ "probe",	cmd_probe,	0 },
 		{ "kmem",	cmd_kmem,	0 },