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 can't see a code path where we would ever have an allcocated arenap->flog. This function is called from pmempool_arena_map_flog() which is called from pmepool_check_btt_map_flog, which passes in a pointer only. No allocated memory. Am I missing something here?