tools: move gst-plot-timeline.py into scripts directory

So it's not in PATH in an uninstalled setup (thwarting
gst-play autocompletion).

scripts/gst-plot-timeline.py

@@ -145,7 +145,7 @@ def normalize_timestamps(syscalls):
 def compute_syscall_metrics(syscalls):
     global PIXELS_PER_SECOND
     global PIXELS_PER_LINE
-    
+
     num_syscalls = len(syscalls)
 
     metrics = Metrics()

tools/Makefile.am

@@ -54,8 +54,7 @@ EXTRA_DIST = \
 	$(noinst_SCRIPTS) \
 	gst-inspect.1.in \
 	gst-launch.1.in \
-	gst-typefind.1.in \
-	gst-plot-timeline.py
+	gst-typefind.1.in
 
 %-@GST_API_VERSION@.1: %.1.in
 	$(AM_V_GEN)sed \