gdb/testsuite/

gdb/testsuite/

	* lib/trace-support.exp (get_in_proc_agent): New.
	* gdb.trace/change-loc.exp: Call get_in_proc_agent to get the location
	of in process trace agent.
	* gdb.trace/ftrace.exp: Likewise.
	* gdb.trace/pending.exp: Likewise.
	* gdb.trace/trace-break.exp: Likewise.
	* gdb.trace/trace-mt.exp
	* gdb.trace/tspeed.exp: Likewise.
	* gdb.trace/tstatus.exp
	* gdb.trace/strace.exp: Likewise.