getch() returns int.

Update some old URL's etc.

Add a default option to the command line parsing. This does the same as
the -h flag and shows the usage. The intention is to catch unknown flags
and tell the user, rather than printing a warning and loading anyway.

Tidy up of my previous commit to make the command line arguments optional.

- Made the default hostname 'i-scream'. Users could have this in their
  hosts file, or they might have a CNAME to their server.
- Added a usage function listing new command line arguments.
- Made the server name and port be options (-s and -p) instead of args.
- Changed the sort option from -s to -o (order).
- Made the host list an option (-l) instead of an argument.
- Added sort options for net and disk io.

This should be slightly tidier than before, and more useful.

Proper resize support by catching SIGWINCH. Done some tiding. Added the ability
to do process stats (r).

Changed the megabytes units to have 2d.p. so it would show more than units of
100k/sec.

Ok, im sure this prob isn't the "right" way to do resizing.. but it seems
to work.

Now works on freebsd too :)

(unchecked) This update should mean it will compile on linux and freebsd.
I think we've got to the point where it should be called 1.1 :)
(If this actually works that is :) )

Added support for sorting on the fly. I have followed a basic convention of
a capital letter will do sorting, and a lower case letter will change the
display properties.

Currently q or Q will quit.
C will sort by CPU
S will sort by Swap
M will sort by Memory
L will sort by Load
N will sort by Network. Network sorting is toggled thru 3 options. First
time it will sort by rx+tx. 2nd time it will sort by rx, 3rd time tx. Then
it will repeat to the start again.

The display function has been updated slightly. The arguments it takes
(num_lines) now means the number of lines on the screen, rather than
the number of hosts to display. A status of what its sorting by has been
added to the bottom line. This line could be used for other "stuff" in the
future as well.

Allows the user to hit "q" to quit the program. The program is now interactive,
as it now uses select to work out if it needs to do something from the user, or
from the TCP connection.

Initial stab at the autoconf/automake stuff for idar. Not sure it's
perfect, I've done a lot of this sort of stuff today ;)

idar is a "top like" client which displays data collected by ihost.
It currently displays cpu, load, pageing, mem, swap, net and disk io.
There is infastructure to display much more in the future, and to be able
to sort on more than just CPU.

genmergesort is macro written by mtr to sort a linked list.

Inital version 1.0 This compiles and works. It requires libxml2 (but it
may work against libxml, but this has not been checked). It also requires
ukcprog. This will not currently compile on linux (as it lacks strlcpy).

Usage is

idar <-d number_lines_to_display> machine_name port <"fqdn1;fqdn2;fqdn3">