add memcache sdb module and sdb execution modules
fix typo in comment
fixed a typo
Removed "Supported commands" from header comment.

The inline CLI usage comments in every function already provide sufficient
documentation for usage of each individual functionality, which are nicely
organized and rendered in the generated HTML docs:
http://docs.saltstack.com/en/latest/ref/clouds/all/salt.cloud.clouds.gce.html

Per discussion with module author (@erjohnso), dropping this comment block.
Merge pull request #17135 from pengyao/scheduler_typo

fixed a typo
Add CLI example to xfs.prune_dump function
detect available libs without throwing off lint
use memcached instead of memcache for sdb and util modules
Merge pull request #17132 from mgwilliams/sdb_memcache

add memcache sdb module and sdb execution modules
Merge branch 'add_xfs_cli_example' of https://github.com/rallytime/salt into rallytime-add_xfs_cli_example
lint
Merge pull request #17148 from thatch45/rallytime-add_xfs_cli_example

Merge #17143
Merge pull request #17137 from mbrukman/clouds-gce-cleanup-comment

Removed "Supported commands" from header comment.
Merge branch 'linux_acl_test' of https://github.com/rominf/salt into rominf-linux_acl_test
lint
Merge pull request #17150 from thatch45/rominf-linux_acl_test

Merge #17139 with lint fixes
modules.linux_acl: add recursive option for all functions