- DESTDIR support
- Add check for inttypes.h and sys/socket.h
- Provide compatibility fallback for netdb.h and the RFC2553 API
(getaddrinfo), supoprting IPv4 only. Code from OpenSSH.
- Use normal autoconf checks for fixed size bit types. Stop using the
older BSD types (u_intXX_t) in libnbcompat.
- Add implementation of shquote (from NetBSD).
- Fix a buglet in the getenv/setenv/unsetenv detection.
- Fix a buglet in the mkdtemp/mkstemp detection.
