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
do you mean to copy dest into buf here? Also in pmempool_check_nsread above you simply pass in the addr of dest, rather than assigning dest. I don't really care how you do it but it should be consistent.