[PATCH v2 00/25] Move exported packfile funcs to its own file

Here is the complete patch set. I have only moved the exported functions that operate with packfiles and their static helpers - for example, static functions like freshen_packed_object() that are used only by non-pack-specific functions are not moved.

In the end, 3 functions needed to be made global. They are find_pack_entry(), mark_bad_packed_object(), and has_packed_and_bad().

Of the 3, find_pack_entry() is probably legitimately promoted. But I think that the latter two functions needing to be accessed from sha1_file.c points to a design that could be improved - they are only used when packed_object_info() detects corruption, and used for marking as bad and printing messages to the user respectively, which packed_object_info() should probably do itself. But I have not made this change in this patch set.

(Other than the 3 functions above, there are some variables and functions that are temporarily made global, but reduced back to static when the wide scope is no longer needed.)

Jonathan Tan (25):
  pack: move pack name-related functions
  pack: move static state variables
  pack: move pack_report()
  pack: move open_pack_index(), parse_pack_index()
  pack: move release_pack_memory()
  pack: move pack-closing functions
  pack: move use_pack()
  pack: move unuse_pack()
  pack: move add_packed_git()
  pack: move install_packed_git()
  pack: move {,re}prepare_packed_git and approximate_object_count
  pack: move unpack_object_header()
  pack: move get_size_from_delta()
  pack: move unpack_object_header()
  sha1_file: set whence in storage-specific info fn
  sha1_file: remove read_packed_sha1()
  pack: move packed_object_info(), unpack_entry()
  pack: move nth_packed_object_{sha1,oid}
  pack: move check_pack_index_ptr(), nth_packed_object_offset()
  pack: move find_pack_entry_one(), is_pack_valid()
  pack: move find_sha1_pack()
  pack: move find_pack_entry() and make it global
  pack: move has_sha1_pack()
  pack: move has_pack_index()
  pack: move for_each_packed_object()

 Makefile                 |    1 +
 builtin/am.c             |    1 +
 builtin/cat-file.c       |    1 +
 builtin/clone.c          |    1 +
 builtin/count-objects.c  |    1 +
 builtin/fetch.c          |    1 +
 builtin/gc.c             |    1 +
 builtin/merge.c          |    1 +
 builtin/pack-redundant.c |    1 +
 builtin/prune-packed.c   |    1 +
 cache.h                  |  122 +--
 connected.c              |    1 +
 diff.c                   |    1 +
 git-compat-util.h        |    2 -
 http-backend.c           |    1 +
 http-push.c              |    1 +
 http-walker.c            |    1 +
 pack.h                   |  137 +++
 packfile.c               | 1905 +++++++++++++++++++++++++++++++++++
 path.c                   |    1 +
 reachable.c              |    1 +
 revision.c               |    1 +
 server-info.c            |    1 +
 sha1_file.c              | 2484 ++++++----------------------------------------
 sha1_name.c              |    1 +
 streaming.c              |    1 +
 26 files changed, 2350 insertions(+), 2321 deletions(-)
 create mode 100644 packfile.c