memtracker

[Andreas Ericsson]

Ahoy.

I've finished the memory tracker. It tracks strdup(), malloc(), 
realloc() and free() calls, and just keeps tabs on what's used and what 
isn't.

Apply the attached patch (patch -p1), ./configure and make nagios
The output ends up in /tmp/nagios.leak

The main point is to let nagios run a couple of times through its hopps, 
force a sigsegv so it dumps core and then use the (preferrably parsed) 
leak output to find name and location of the variables that are never freed.

It's conditional to MEMLEAK_DEBUG being defined, so it can be kept 
around without affecting anything on production systems.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer
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