Merge branch 'mg/gpg-interface-using-status' into maint

Verification of signed tags were not done correctly when not in C
or en/US locale.

* mg/gpg-interface-using-status:
  pretty: make %GK output the signing key for signed commits
  pretty: parse the gpg status lines rather than the output
  gpg_interface: allow to request status return
  log-tree: rely upon the check in the gpg_interface
  gpg-interface: check good signature in a reliable way

Documentation/pretty-formats.txt

@@ -133,6 +133,7 @@ The placeholders are:
 - '%GG': raw verification message from GPG for a signed commit
 - '%G?': show either "G" for Good or "B" for Bad for a signed commit
 - '%GS': show the name of the signer for a signed commit
+- '%GK': show the key used to sign a signed commit
 - '%gD': reflog selector, e.g., `refs/stash@{1}`
 - '%gd': shortened reflog selector, e.g., `stash@{1}`
 - '%gn': reflog identity name