Merge branch 'ps/environ-wo-the-repository'

Code clean-up.

* ps/environ-wo-the-repository: (21 commits)
  environment: stop storing "core.notesRef" globally
  environment: stop storing "core.warnAmbiguousRefs" globally
  environment: stop storing "core.preferSymlinkRefs" globally
  environment: stop storing "core.logAllRefUpdates" globally
  refs: stop modifying global `log_all_ref_updates` variable
  branch: stop modifying `log_all_ref_updates` variable
  repo-settings: track defaults close to `struct repo_settings`
  repo-settings: split out declarations into a standalone header
  environment: guard state depending on a repository
  environment: reorder header to split out `the_repository`-free section
  environment: move `set_git_dir()` and related into setup layer
  environment: make `get_git_namespace()` self-contained
  environment: move object database functions into object layer
  config: make dependency on repo in `read_early_config()` explicit
  config: document `read_early_config()` and `read_very_early_config()`
  environment: make `get_git_work_tree()` accept a repository
  environment: make `get_graft_file()` accept a repository
  environment: make `get_index_file()` accept a repository
  environment: make `get_object_directory()` accept a repository
  environment: make `get_git_common_dir()` accept a repository
  ...

diff --cc apply.c
Simple merge

diff --cc builtin/config.c
Simple merge

diff --cc builtin/gc.c
Simple merge

diff --cc builtin/pack-objects.c
Simple merge

diff --cc builtin/repack.c
Simple merge

diff --cc builtin/stash.c
Simple merge

diff --cc builtin/submodule--helper.c
Simple merge

diff --cc bundle-uri.c
index dc0c96955b829997fd251e0feff0b088ad461c6b,eb8eca078bb38128dfc78f38aca94ad297434132..4b1a2e293757b9d196fdf5295563b1e7c18acb82
--- 1/bundle-uri.c
--- 2/bundle-uri.c
+++ b/bundle-uri.c
@@@ -13,7 -12,7 +12,8 @@@
  #include "config.h"
  #include "fetch-pack.h"
  #include "remote.h"
 +#include "trace2.h"
+ #include "object-store-ll.h"
  
  static struct {
        enum bundle_list_heuristic heuristic;

diff --cc commit.c
Simple merge

diff --cc compat/mingw.c
Simple merge

diff --cc fetch-pack.c
Simple merge

diff --cc ref-filter.c
Simple merge

diff --cc refs/files-backend.c
Simple merge

diff --cc repository.c
Simple merge

diff --cc submodule.c
Simple merge

diff --cc t/helper/test-path-utils.c
Simple merge

diff --cc wt-status.c
Simple merge