Change from /tmp to /var/lib/corewatcher

Change from /tmp to /var/lib/corewatcher

We want dumps to be persistent across reboots, so tmpfs isn't the best
place for them.  Plus /tmp is a wild west of writability.  We'll allow full
writing of /var/lib/corewatcher, but not /var/lib/corewatcher/processed.
Still need a tmp watcher on this area to prune files.

Also this directory is an editorial choice by the distro maker, not a user
configurable option...remove user configurability.

Signed-off-by: Tim Pepper <timothy.c.pepper@linux.intel.com>