Merge branch 'ps/refs-writing-subcommands'

The 'git refs' toolbox has been extended with new 'create', 'delete',
'update', and 'rename' subcommands to create, delete, update, and
rename references, respectively.

* ps/refs-writing-subcommands:
  builtin/refs: add "rename" subcommand
  builtin/refs: add "create" subcommand
  builtin/refs: add "update" subcommand
  builtin/refs: add "delete" subcommand
  builtin/refs: drop `the_repository`

diff --cc t/meson.build
Simple merge