* config/udi-gdb.exp (gdb_exit): Remove close command.

	* config/udi-gdb.exp (gdb_exit): Remove close command.
	(gdb_target_udi): New procedure to set the UDI target.
	(gdb_start): Don't remove *_soc files.  Use gdb_target_udi.
	* gdb.t00/default.exp: Added expected failures for a29k-*-udi.
	Added waits for prompts after several question responses.  Added
	some more responses used by a29k-amd-udi-gdb.
	* gdb.t01/run.exp, gdb.t06/break.exp: Added a29k-*-udi support:
	pass different arguments, restart UDI connection after program
	completion.
	* gdb.t02/whatis.exp, gdb.t03/ptype.exp, gdb.t07/watchpoint.exp,
	gdb.t08/opaque.exp, gdb.t11/list.exp, gdb.t12/scope.exp,
	gdb.t15/funcargs.exp, gdb.t16/printcmds.exp, gdb.t20/misc.exp,
	gdb.t21/cplusfuncs.exp: Added expected failures for a29k-*-*.
	* gdb.t04/setvar.exp, gdb.t05/expr.exp, gdb.t07/watchpoint.exp,
	gdb.t08/opaque.exp, gdb.t12/scope.exp, gdb.t13/bitfields.exp,
	gdb.t15/funcargs.exp, gdb.t16/printcmds.exp,
	gdb.t17/callfuncs.exp, gdb.t20/classes.exp, gdb.t20/inherit.exp,
	gdb.t20/misc.exp, gdb.t22/virtfuncs.exp: Restart UDI connection
	after program completion.
	* gdb.t10/crossload.exp: Does not work for a29k-*-*, since BFD is
	compiled with a SELECT_VECS setting.
	* gdb.t15/funcargs.exp: Use argument to backtrace to prevent
	infinite recursion.

	* gdb.t20/classes.exp, gdb.t20/inherit.exp, gdb.t22/virtfuncs.exp:
	Added checks for COFF results, and made them expected failures for
	all targets.  It would be better to make them expected failures
	for COFF targets only.