test suite update - gdb.base/[n-r]

test suite update - gdb.base/[n-r]

Convert files gdb.base/[n-r]*.exp to use standard_output_file et al.

	* gdb.base/nextoverexit.exp, gdb.base/nextoverexit.exp,
	gdb.base/nodebug.exp, gdb.base/nofield.exp, gdb.base/nostdlib.exp,
	gdb.base/opaque.exp, gdb.base/overlays.exp, gdb.base/pc-fp.exp,
	gdb.base/pending.exp, gdb.base/permissions.exp,
	gdb.base/pie-execl.exp, gdb.base/pointers.exp,
	gdb.base/pr11022.exp, gdb.base/print-file-var.exp,
	gdb.base/printcmds.exp, gdb.base/prologue.exp,
	gdb.base/psymtab.exp, gdb.base/ptr-typedef.exp,
	gdb.base/ptype.exp, gdb.base/randomize.exp,
	gdb.base/readline-ask.exp, gdb.base/recpar.exp,
	gdb.base/recurse.exp, gdb.base/relativedebug.exp,
	gdb.base/relocate.exp, gdb.base/remote.exp, gdb.base/reread.exp,
	gdb.base/return-nodebug.exp, gdb.base/return2.exp: Use
	standard_testfile, standard_output_file, prepare_for_testing,
	clean_restart.