- Add support for GNU/kFreeBSD.
- Make it work on FreeBSD and NetBSD even when /proc is not mounted.
- Speed up on OpenBSD.
* lib/vma-iter.c (struct rofile, rof*): Define also on GNU/kFreeBSD.
(vma_iterate_bsd): New function.
(vma_iterate): Use it as fallback on FreeBSD and NetBSD. Use it as
first choice on OpenBSD. Treat GNU/kFreeBSD like Linux.
* lib/vma-iter.h (VMA_ITERATE_SUPPORTED): Define also on GNU/kFreeBSD.
* modules/vma-iter (configure.ac): Require AC_C_INLINE.