common: add repology badge to README

pmem2: move reservation struct to vm_reservation.c

Merge stable-1.9 into master 

pool: remove sds extraneous

doc: tiny man page fixes

test: fix sds support check in pmempool_feature

pmem2: fix vm_reservation TEST29 bugs

test: more scope fixes

Due to possible races and bugs when mapping asynchronously to the
virtual memory reservation, rw_locks were added in the
pmem2_map_new/delete functions. Locks are invoked only when the
reservation is set in the config structure.

test: fix pmem2 example without libndctl

test: fix symbol format in the scope tests

doc: add missing libpmem2 functions in gitignore

pmem2: add pmem2_map_from_existing function

example: unsafe shutdown count

pmem2: remove addr and addr_request from config

test: change obj_defrag_advanced TEST3 type to long

Stable 1.9

Stable 1.8

test: update persist count for ppc (drain after ulog processing)

test: store logs in separate folders

test: fix fail on return pmempool_feature