Turn some boolean fields into bitfields and use uint32_t for name
hash.  This shrinks the size of the structure from 128 bytes to 120
bytes.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Signed-off-by: Junio C Hamano <gitster@pobox.com>

* maint:
  Start preparing for 1.8.1.3

Prepare remote-helper test written in Python to be run with Python3.

* jk/remote-helpers-in-python-3:
  git_remote_helpers: remove GIT-PYTHON-VERSION upon "clean"
  git-remote-testpy: fix path hashing on Python 3
  git-remote-testpy: call print as a function
  git-remote-testpy: don't do unbuffered text I/O
  git-remote-testpy: hash bytes explicitly
  svn-fe: allow svnrdump_sim.py to run with Python 3
  git_remote_helpers: use 2to3 if building with Python 3
  git_remote_helpers: force rebuild if python version changes
  git_remote_helpers: fix input when running under Python 3
  git_remote_helpers: allow building with Python 3

Improve "git p4" on Cygwin.

* pw/git-p4-on-cygwin: (21 commits)
  git p4: introduce gitConfigBool
  git p4: avoid shell when calling git config
  git p4: avoid shell when invoking git config --get-all
  git p4: avoid shell when invoking git rev-list
  git p4: avoid shell when mapping users
  git p4: disable read-only attribute before deleting
  git p4 test: use test_chmod for cygwin
  git p4: cygwin p4 client does not mark read-only
  git p4 test: avoid wildcard * in windows
  git p4 test: use LineEnd unix in windows tests too
  git p4 test: newline handling
  git p4: scrub crlf for utf16 files on windows
  git p4: remove unreachable windows \r\n conversion code
  git p4 test: translate windows paths for cygwin
  git p4 test: start p4d inside its db dir
  git p4 test: use client_view in t9806
  git p4 test: avoid loop in client_view
  git p4 test: use client_view to build the initial client
  git p4: generate better error message for bad depot path
  git p4: remove unused imports
  ...

Clarify the ownership rule for commit->buffer field, which some
callers incorrectly accessed without making sure it is populated.

* jk/read-commit-buffer-data-after-free:
  logmsg_reencode: lazily load missing commit buffers
  logmsg_reencode: never return NULL
  commit: drop useless xstrdup of commit message

Forbid "git add -u" and "git add -A" without pathspec run from a
subdirectory, to train people to type "." (or ":/") to make the
choice of default does not matter.

* mm/add-u-A-sans-pathspec:
  add: warn when -u or -A is used without pathspec

Improve error and advice messages given locally when "git push"
refuses when it cannot compute fast-forwardness by separating these
cases from the normal "not a fast-forward; merge first and push
again" case.

* jc/push-reject-reasons:
  push: finishing touches to explain REJECT_ALREADY_EXISTS better
  push: introduce REJECT_FETCH_FIRST and REJECT_NEEDS_FORCE
  push: further simplify the logic to assign rejection reason
  push: further clean up fields of "struct ref"

Configuration parsing for tar.* configuration variables were
broken. Introduce a new config-keyname parser API to make the
callers much less error prone.

* jk/config-parsing-cleanup:
  reflog: use parse_config_key in config callback
  help: use parse_config_key for man config
  submodule: simplify memory handling in config parsing
  submodule: use parse_config_key when parsing config
  userdiff: drop parse_driver function
  convert some config callbacks to parse_config_key
  archive-tar: use parse_config_key when parsing config
  config: add helper function for parsing key names

Allow a configuration variable core.commentchar to customize the
character used to comment out the hint lines in the edited text from
the default '#'.

* jc/custom-comment-char:
  Allow custom "comment char"