tools: pmempool utility

- pmempool utility with the following commands:
-- create - creating pool files
-- info - parsing pool files
-- dump - dumping data from pool files
-- check - checking and repairing pool files
- update scripts for creating packages
- bash completion script
- manual pages and README file
As a general comment I'd like to have a high level design review of the commands and the syntax. Simply so I can see it more clearly and we can discuss as a group. If you have already done this before I joined the team, then perhaps you could just go over it with me.