gdb:

gdb:

	* common/agent.c: New.
	* common/agent.h: New.
	* configure.ac: Add `sys/socket.h' and `sys/un.h' to
	AC_CHECK_HEADERS.
	* configure, configh.in: Regenerated.

gdb/gdbserver:

	* Makefile.in (OBS): Add agent.o.
	Add new rule for agent.o.
	Track dependence of tracepoint.c on agent.h.
	* tracepoint.c (run_inferior_command_1):
	(run_inferior_command): Call agent_run_command.
	(gdb_ust_connect_sync_socket): Deleted.  Move it to
	common/agent.c.
	(resume_thread, stop_thread): Likewise.
	(gdb_ust_socket_init): Renamed to ...
	(gdb_agent_socket_init): ... New.
	(gdb_ust_thread): Renamed to ...
	(gdb_agent_helper_thread): ... New.
	(gdb_ust_init): Move some code to ...
	(gdb_agent_init): ... here.  New.
	[HAVE_UST]: Call gdb_ust_init.
	(initialize_tracepoint_ftlib):  Call gdb_agent_init.
	* configure.ac: Add `sys/un.h' to AC_CHECK_HEADERS.
	* config.in, configure: Regenerated.