[Linux-cluster] ccsd performance / local sockets patch for STABLE / RHEL4 branches

[Lon Hohberger]

Rgmanager is a heavy user of ccsd, and the method of communication
libccs currently uses can become problematic when we run out (or low on)
reserved ports, causing rgmanager to perform *extremely* badly during
startup (sometimes taking 5-10 minutes to start in reported cases!
Yikes!).

So, here's a patch to fix ccs.  This should fix "slow rgmanager"
problems, which was primarily caused when using IPv6 for communications
(the default).  It'll also keep your number of available reserved ports
higher ;)

The patch is backwards / forwards compatible (older statically-linked
apps will work with new ccsd, and newly built apps linked against new
libccs will work with old ccsd...).

More information here:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162078

-- Lon
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