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
I think here, and as a general comment, anything where you are checking for an int value > 0, should be while (nextoff > 0). An explicit logical comparison should be used when we are not dealing with a boolean.