gen_leader at jungerl

[Ulf Wiger]

I've added gen_leader, a gen_server-like behaviour for writing
fault-tolerant replicated servers, to Jungerl.

As an example program, I've included a fully replicated version
of dict.erl, using about 100 lines of code in two modules
(in addition to what's in dict.erl, that is.)

It's basically the same stuff that some of you have received
through email, except I've added a reasonable amount of edoc-
based documentation.

Please report if there are any problems with make
(I have to do the cvs stuff on a machine that has no
erlang, for now. I'll try to improve matters on my end.)

The leader election algorithm part was done by Thomas Arts,
as a spinoff from working with the 'locker' contrib.
Building gen_leader, I had an opportunity to try "pair
programming" and decided that it's a lot of fun if you find
the right person to pair up with. (:

/Uffe
-- 
Ulf Wiger, Senior System Architect
EAB/UPD/S

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