Remove the_repository global for am, annotate, apply, archive builtins

Remove the_repository global variable for the annotate, apply, and archive bulitins.

Changes since V3:

* Improve commit message in patch 2

Changes since V1:

* in patch 1, only pass in repo to the bulitin if the repo exists

Changes since V2:

* drop patch 3, which is a bit more involved to dis-entangle the_repository
* use a single variable in run_builtin() to keep track of whether or not we are operating in a repository

John Cai (3):
git: pass in repo to builtin based on setup_git_directory_gently
annotate: remove usage of the_repository global
archive: remove the_repository global variable

 builtin/add.c      | 3 ++-
 builtin/annotate.c | 5 ++---
 builtin/archive.c  | 5 ++---
 git.c              | 7 ++++---
 4 files changed, 10 insertions(+), 10 deletions(-)

base-commit: 3857aae53f3633b7de63ad640737c657387ae0c6
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1788%2Fjohn-cai%2Fjc%2Fremove-global-repo-a-v4
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1788/john-cai/jc/remove-global-repo-a-v4
Pull-Request: https://github.com/git/git/pull/1788

Range-diff vs v3:

 1:  8009fdb38b0 = 1:  d59b85b5298 git: pass in repo to builtin based on setup_git_directory_gently
 2:  1b82b5dc678 ! 2:  f26d09215c3 annotate: remove usage of the_repository global

@@ Metadata
## Commit message ##
annotate: remove usage of the_repository global

- Remove the the_repository with the repository argument that gets passed
- down through the builtin function.
+ As part of the effort to get rid of global state due to the_repository
+ variable, remove the the_repository with the repository argument that
+ gets passed down through the builtin function.

3: 5d33a375f41 ! 3: 736212f34b5 archive: remove the_repository global variable
@@ Metadata
## Commit message ##
archive: remove the_repository global variable

- Replace the_repository with the repository argument that gets passed
- down through the builtin function.
+ As part of the effort to get rid of global state due to the global
+ the_repository variable, replace the_repository with the repository
+ argument that gets passed down through the builtin function.
+
+ The repo might be NULL, but we should be safe in write_archive() because
+ it detects if we are outside of a repository and calls
+ setup_git_directory() which will error.

gitgitgadget