Merge branch 'ph/tag-force-no-warn-on-creation' into maint

"git tag -f <tag>" always said "Updated tag '<tag>'" even when
creating a new tag (i.e. not overwriting nor updating).

* ph/tag-force-no-warn-on-creation:
tag: --force does not have to warn when creating tags

diff --cc builtin/tag.c
Simple merge