README for dealing with coredumps.

A good link:

    https://stackoverflow.com/questions/17965/how-to-generate-a-core-dump-in-linux-on-a-segmentation-fault
    https://www.suse.com/support/kb/doc/?id=000015982

On my system, core files are put here:

    erniep@gracie:~/Development/Peak/src/seer/tests/hellosegv$ ./hellosegv
    XX: 0 ./hellosegv
    Hello, World!42
    Segmentation fault (core dumped)

    erniep@gracie:~/Development/Peak/src/seer/tests/hellosegv$ ls -l /var/local/dumps/
    total 232
    -rw------- 1 erniep users 507904 Mar 10 22:20 core.hellosegv.26205

As per this linux config setting:

    gracie:~ # sysctl kernel.core_pattern
    kernel.core_pattern = /var/local/dumps/core.%e.%p

Quick setup:

    The quick step guide for this is as follows. Some as root.

    Run:
        % ulimit -c unlimited
        % install -m 1777 -d /var/local/dumps
        % echo "/var/local/dumps/core.%e.%p"> /proc/sys/kernel/core_pattern
        % rcapparmor stop
        % sysctl -w kernel.suid_dumpable=2