Re: bfd_cleanup for object_p

Bits still missing from commit cb001c0d.

	* aoutx.h (aout_@var{size}_some_aout_object_p): Correct synopsis.
	* i386lynx.c (lynx_core_file_p): Correct return type.
	* ptrace-core.c (ptrace_unix_core_file_p): Likewise.