* gdb.dwarf2/dup-psym.exp: Use prepare_for_testing_full.

	* gdb.dwarf2/dup-psym.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-anonymous-func.exp: Use
	prepare_for_testing_full.
	* gdb.dwarf2/dw2-basic.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-compressed.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-const.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-cu-size.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-intercu.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-intermix.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-linkage-name-trust.exp: Use
	prepare_for_testing_full.
	* gdb.dwarf2/dw2-producer.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-ref-missing-frame.exp: Use
	prepare_for_testing_full.
	* gdb.dwarf2/dw2-restore.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/dw2-strp.exp: Use prepare_for_testing_full.
	* gdb.dwarf2/mac-fileno.exp: Use prepare_for_testing_full.