Dedupe it into src/user.c where it fits and rewrite it in terms of a new
user_find_name function which will be used more later.

Move it from src/{web,}client/user.[ch] into src/user.c and simplify
with pwrite(2).

this moves (most of) the mrod and zod commands to the server

- Move as much of mw into src/client/ as possible
- Make sure everything that mwserv and webclient require is in src/
- Build a libmw.a from src/*.o to make linking easier
- Rejig and simplify some Makefile rules

This should help to make it clear which bits of code are shared and which are specific to the UI. We should avoid putting any user interface stuff into libmw.a as a rule.

TODO:
- Improve some file names (e.g. sqlite.{c,h} is a silly name)
- Fix building the utils
- Add sensible svn:ignores to src/client