Translate git_more_info_string consistently

"git help" translated the "See 'git help <command>' for more
information..." message, but "git" didn't.

Signed-off-by: Kevin Bracey <kevin@bracey.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'maint'

* maint:
  Translate git_more_info_string consistently