[caching tools] handle version 1 metadata where policy_hint_width is zero
Update Gemfile.lock
[cache_restore] --debug-override-metadata-version

A flag that deliberately causes the wrong metadata version to be
written.  Useful for testing the kernel module.
[thin_check] thin_check wasn't giving a non-zero exit code for damage in mapping trees
whitespace
[thin-provisioning] walk_device_tree()
[thin-provisioning] walk_mapping_tree()
[thin-provisioning] re-write metadata_dumper.cc
update ignore file
[unit-tests, cache_superblock_t] update tests to reflect superblock_flags changes
[caching] superblock field wasn't getting initialised in default ctr
bump version
[caching] handle VARIABLE_HINT_SIZE incompat flag
Add missing cache tools manual pages and update Makefile.in respectively
Merge branch 'manual_page_fixes' of github.com:lvmguy/thin-provisioning-tools into manual_page_fixes