clean up struct ref's nonfastforward field

Each ref structure contains a "nonfastforward" field which
is set during push to show whether the ref rewound history.
Originally this was a single bit, but it was changed in
f25950f (push: Provide situational hints for non-fast-forward
errors) to an enum differentiating a non-ff of the current
branch versus another branch.

However, we never actually set the member according to the
enum values, nor did we ever read it expecting anything but
a boolean value. But we did use the side effect of declaring
the enum constants to store those values in a totally
different integer variable. The code as-is isn't buggy, but
the enum declaration inside "struct ref" is somewhat
misleading.

Let's convert nonfastforward back into a single bit, and
then define the NON_FF_* constants closer to where they
would be used (they are returned via the "int *nonfastforward"
parameter to transport_push, so we can define them there).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update Swedish translation (724t0f0u).

- Update for 1.7.10-rc1.
- Add a missing -e when generaring the "Untracked files" message.
- Fixed some wordings after playing with the localized version.
l10n: Review zh_CN translation for Git 1.7.10-rc1

Overall review of the zh_CN translation:

 - Distinguish the translations of index and stage, though they are the
   same thing.

 - Many other fixes, e.g., add the lost periods at the end of translated
   sentences.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Add url of Swedish l10n team in TEAMS file

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
tests: unset COLUMNS inherited from environment

$COLUMNS must be unset to not interfere with the tests. The tests
already ignore the terminal size because output is redirected to a
file, but COLUMNS overrides terminal size detection and changes the
test output away from the standard 80.

Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
l10n updates for Git 1.7.10-rc1

* 'master' of git://github.com/git-l10n/git-po:
  Add url of Swedish l10n team in TEAMS file
  l10n: Review zh_CN translation for Git 1.7.10-rc1
  Update Swedish translation (724t0f0u).
  l10n: Update zh_CN translation for Git 1.7.10-rc1
  l10n: Update git.pot (1 new message)
Merge branch 'master' into next to sync with l10n updates

* master:
  tests: unset COLUMNS inherited from environment
  Add url of Swedish l10n team in TEAMS file
  l10n: Review zh_CN translation for Git 1.7.10-rc1
  Update Swedish translation (724t0f0u).
  l10n: Update zh_CN translation for Git 1.7.10-rc1
  l10n: Update git.pot (1 new message)
correct spelling: an URL -> a URL

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
correct a few doubled-word nits in comments and documentation

Found by running this command:
$ git ls-files -z|xargs -0 perl -0777 -n \
 -e 'while (/\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims)' \
 -e '  {' \
 -e '    $n = ($` =~ tr/\n/\n/ + 1);' \
 -e '    ($v = $&) =~ s/\n/\\n/g;' \
 -e '    print "$ARGV:$n:$v\n";' \
 -e '  }'

Why not just git grep -E ...?
That wouldn't work then the doubled words are separated by a newline.
This is derived from a Makefile syntax-check rule in gnulib's maint.mk:
  http://git.sv.gnu.org/cgit/gnulib.git/tree/top/maint.mk

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git 1.7.10-rc3

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sync with 1.7.10-rc3

* master:
  Git 1.7.10-rc3
  correct a few doubled-word nits in comments and documentation
  correct spelling: an URL -> a URL
config: remove useless assignment

v1.7.9-8-g270a344 (config: stop using config_exclusive_filename) replaced
config_exclusive_filename with given_config_file.  In one case this
resulted in a self-assignment, which is reported by clang as a warning.
Remove the useless code.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'ct/advise-push-default' into next

Breaks down the cases in which "git push" fails due to non-ff into three
categories, and gives separate advise messages.  This should be a good
change regardless of mm/push-default-switch-warning topic.

* ct/advise-push-default:
  clean up struct ref's nonfastforward field
  push: Provide situational hints for non-fast-forward errors
Merge branch 'mm/push-default-switch-warning' into next

This resurrects an ancient patch I wrote during a discussion we had in the
1.6.3-1.6.4 era.  This should probably come after ct/advise-push-default
topic and at that point the advise messages need to be rephrased, taking
the future default change into account.

* mm/push-default-switch-warning:
  push: start warning upcoming default change for push.default

Conflicts:
	builtin/push.c
Merge branch 'master' into next

* master:
  config: remove useless assignment