Sorry for a big update - I still don't have internet connection at home

Sorry for a big update - I still don't have internet connection at home
and this is what I've been doing a few weeks now.. :) You really shouldn't
upgrade to this version without keeping a backup of the working one, since
this will break everything and at least notify list is broken - probably
something else too.

* On the way to 0.8.0 .. Major rewriting/rearranging code. There's
  some changes in behaviour because I'm trying to make Irssi a bit
  more compatible with EPIC.

* libPropList isn't needed anymore - I'm using my own configuration
  library. This is mostly because different proplists worked a bit
  differently everywhere and several people had problems with it.
  It's also yet another extra library that you needed to compile
  Irssi. New configuration library has several advantages:

  You can add comments to configuration file and they also stay
  there when it's saved.

  It's not nearly as vulnerable as proplist. If some error occurs,
  instead of just not reading anything it will try to continue if
  possible. Also the error messages are written to irssi's text
  window instead of stdout.

  It can be managed more easily than proplist - setting/getting the
  configuration is a lot more easier.

* Coding style changes - I'm not using gint, gchar etc. anymore,
  they're just extra pain when moving code to non-glib projects and
  syntax hilighting doesn't work by default with most editors ;)

  Indentation style was also changed to K&R because of some political
  reasons ;) And I'm already starting to like it.. :) It forces me
  to split code to different functions more often and the result is
  that the code gets more readable.

  And finally I'm also using nst' all over the place.

+ /EVAL <commands> - Expand all the special variables from string and
  run it. Commands can be split with ; character. See
  docs/SPECIAL_VARS for more info.
+ Aliases are parsed just like /EVAL - arguments are in $0..$9.
+ Text formats are also parsed like /EVAL, arguments used to be in
  $1..$9, now they're in $0..$8 so it messes up existing themes..
+ /SET [key [value]] - no more the '=' character. Boolean values
  also need to be changed with ON/OFF/TOGGLE values (not yes/no).
  Settings aren't saved to disk until you use /SAVE.
+ /TOGGLE <key> [ON/OFF] - same as /SET <key> TOGGLE

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@163 dbcabf3a-b0e7-0310-adc4-f8d773084564