2013-05-08  Hafiz Abid Qadeer  <abidh@codesourcery.com>

	* gdb.trace/circ.exp: Remove unnecessary 'if then' checks.
	(set_a_tracepoint): Set tracepoint before prologue.
	(run_trace_experiment): Test setup_tracepoints and 'break end'
	in it.
	(trace_buffer_normal): Remove.
	(gdb_trace_circular_tests): Remove.  Move tests to...
	(top level): ...here.  Call 'runto_main' before checking for
	trace support.  Use commands to check the support for circular
	trace buffer and changing of trace buffer size.  Add test
	to calculate size of single frame.  Use this size to
	calculate the size of trace buffer.  Use 'tfind pc func9'
	instead of 'tfind 9'.  Use 'with_test_prefix'.