Compiling
---------
Install the libkrb5-dev and libdockapp-dev packages before compiling.

Configuration
-------------
Optionally, create a file ~/.wmkrbrc which can contain the following lines:

krb5ccname <file>	Kerberos 5 cache file
krbtkfile <file>	Kerberos 4 cache file
authenticate <file>	file to execute on right-click
fgcolor <color>		foreground color
bgcolor <color>		background color
infocolor <color>	color used for other information (realm)
tkcolor <color>		color used for principal/instance with tickets
warning <t> <color>	color used for tickets whose remaining lifetime
			is at most t seconds
expired <color>		color used for expired tickets
font <fontname>		text font
abbreviate_realms <y/n>	if y, display only first part of realm name
update_interval <t>	number of seconds to wait between updating display

A <color> is either the name of an X color like "dark gray" or a hex
value such as "#A9A9A9" (without quotes).

Usage
-----
Left-click updates the display; right-click the authentication program
specified in the configuration file.  For example, this file could be

#!/bin/sh
xterm -geometry 40x1+500+300 -e /bin/sh -c 'kinit -54'
zwgc
aklog
