Add note that it compiles only on clean 2.6 installs or later.
Merge in some stuff from the kaffe1 port, to eliminate duplication.
Shorten DESCR to a few paragraphs.
Porters: please make sure you use bsd.port.mk 1.75 or later when
updating ports. That version of the makefile adds all sums. Previous
versions of the makefile will still work for people installing ports.