Fixes for logging, error handling, error/warning messages, local files includes

[ematsumiya]

List of commits: ksmbd-tools: makes logger app names consistent control: fix return value for version and shutdown ksmbd-tools: fix local file includes ksmbd-tools: replace some pr_err() by pr_warn() logging: create a pr_warn() with a PR_WARN log level control: show all debug types available in usage() control: clarify some error messages

[namjaejeon]

Checking them, Thanks for your patch.

[ematsumiya]

Closing. Will re-submit to linux-cifs mailing list.