* config/{udi-gdb.exp, gdb-unix.exp}: Replace calls to obsolete

	* config/{udi-gdb.exp, gdb-unix.exp}:  Replace calls to obsolete
	"alldone" proc with call to cleanup and exit.
	* {gdb.t01/run.exp, gdb.t01/term.exp, gdb.t02/whatis.exp,
	gdb.t03/ptype.exp, gdb.t04/setvar.exp, gdb.t05/expr.exp,
	gdb.t06/break.exp, gdb.t07/watchpoint.exp, gdb.t08/opaque.exp,
	gdb.t09/corefile.exp, gdb.t10/crossload.exp, gdb.t11/list.exp,
	gdb.t12/scope.exp, gdb.t13/bitfields.exp}:  Replace calls to
	"alldone" proc with simple returns that suppress remaining
	tests.  The alldone proc went away many months ago.