leaving the ansi stuff)
- use longlong_t instead of quad_t (etc), and rename *uqd*() -> *ull*()
- clean up the NET2_STAT stuff similar to ftpd; provide #defines and
macros which select which cast to use, etc
- clean up the NET2_FTS and NET2_REGEX #define use
Continue partial write(2) on signals (xwrite()).
Partial read(2) at a few places are also continued (xread()).
Add {read,write}_with_restart() hooks for porting on systems
which don't restart interrupted read()/write() calls.
Reviewed and discussed in tech-kern and tech-userlevel lists.