U61 uses gnu autoconf, the scripts are not perfect yet, but should
work OK to compile and try the project.

You *need* to have ClanLib to compile U61
ClanLib is available on http://clanlib.org
ClanLib 0.4.4 seems to work OK for U61.

Otherwise, just type:
$ autoconf
$ ./configure
$ make
$ ./u61

The install script is not clean yet, and probably won't be until
I get a truely stable and nearly final version of the game...
