Import the mozjs-17 sources, this is the last version of the library that actually works with mw (it goes C++ only after that) and it needs some tweaks from stock to actually work.

fix doing/what by forcing the output through display_message so that colour codes get properly translated

Abstract out the common code to tell you the room topic, make it also tell you if the room is soundproof, call it after being summoned. add command to toggle soundproof

- Move Lock_File and Unlock_File to files.h and static inline them
- Move the folder functions out of files.c and into folders.c
- Remove files.c
- Tidy up some includes

Get rid of open_incoming_fifo() and close_fifo(). Approaching a point where files.{c,h} can disappear...

Rejig the user file code into user.{c,h} as before, we could do with a function to iterate over the user file entries to remove some duplicate code and abstract this stuff away.

Split out the who file stuff from files.* into who.* and tidy up the code a bit. Intention here is to modularise the who file code so that it can be replaced with a server-managed sqlite db (or whatever) easily in future. There's still a lot of code which does its own operations on the who file with read() and lseek() so a good next step will be to hide that code behind an iterator or similar.

- 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

Fixes mwuri logging - puts a missing NULL in the struct uripatt entry for ignoring sucs.org that was missing
also simplifies the broken regex that wasn't catching sucs.org so it works and matches casual references to sucs.org while allowing more complex ones to be caught

talker is rarely used to refer to the website, and it is safe to presume that 
people using mwURI know of the SUCS homepge and how to find it. All 
other pages in the sucs.org domain are unaffected. 

Operation callbacks don't seem to fire automatically so this makes sure they're fired when a ^C or timeout interupt happens so our scripts actually stop
iloop protection now repaired

struct person was being padded in a couple of places so the padding is now part of the users.bb file format. This adds a couple of fields to make the padding explicit.

Uses 'localtime' for the added datetime in the .uri command so in BST the time printed matches up with the time displayed when the user first typed the uri.