Add branch-sort and repo.branch-sort options.

When set to "name", branches are sorted by name, which is the current
default. When set to "age", branches are sorted by the age of the
repository.

This feature was requested by Konstantin Ryabitsev for use on
kernel.org.

Proposed-by: Konstantin Ryabitsev <mricon@kernel.org>
tests/: Do not use `sed -i`

"-i" isn't part of the POSIX standard and doesn't work on several
platforms such as OpenBSD. Use a temporary file instead.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
t0107: Skip ZIP tests if unzip(1) isn't available

Note that we cannot use skip_all here since some tests have already been
executed when ZIP tests are reached. Use test prerequisites to skip
everything using unzip(1) if the binary is not available instead.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
ui-snapshot.c: Prepend "V" when guessing ref names

In cgit_print_snapshot_links() we strip leading "v" and "V", while we
currently only prepend a lower case "v" when parsing a snapshot file
name. This results in broken snapshot links for tags that start with an
upper case "V". Avoid this by prepending a "V" as a fallback.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
cgitrc.5.txt: Specify when scan-path must be defined before.

Several options must be specified prior to scan-path. This is consistant
source of user confusion. Document these facts.

Suggested-by: Lukas Fleischer <cgit@cryptocrack.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
t0109: test more URLs

In order to ensure that we don't access $HOME at some point after
initial startup when rendering a specific view, run the strace test on a
range of different pages.

This ensures that we don't end up reading a configuration later for some
specific view.

Signed-off-by: John Keeping <john@keeping.me.uk>
tests: set TEST_OUTPUT_DIRECTORY to the CGit test directory

By default, Git's test suite puts the trash directories and test-results
directory into its own directory, not that containing the tests being
run.  This is less convenient for inspecting test failures, so set the
output directory to CGit's tests/ directory instead.

Note that there is currently a bug in Git whereby it will create the
trash directories in our tests/ directory regardless of the value of
TEST_OUTPUT_DIRECTORY, and then fail to remove them once the tests are
done.  This change does currently affect the location of the
test-results/ directory though.

Signed-off-by: John Keeping <john@keeping.me.uk>
t0001: ignore ".dirty" suffix on Git version

When testing modifications in Git that affect CGit, it is annoying to
have t0001 failing simply because the Git version has a ".dirty" suffix
when the version of Git there does indeed match that specified in the
CGit makefile.  Stop this by stripping the ".dirty" suffix from the
GIT_VERSION variable.

Note that this brings the "Git version" behaviour in line with the
"submodule version" case which does not check if the working tree in
git/ is modified.

Signed-off-by: John Keeping <john@keeping.me.uk>
scan-tree: fix regression in section-from-path=-1

Commit fb3655d (use struct strbuf instead of static buffers -
2013-04-06) introduced a regression in the "section-from-path" handling
when the configured value is negative.  By changing the "rel" variable
so that it includes a trailing slash, counting slashes from the end of
the string no longer gives the same answer as it did before.

Fix this by ensuring that "rel" does not have a trailing slash.

Reported-by: Julius Plenz <plenz@cis.fu-berlin.de>
Signed-off-by: John Keeping <john@keeping.me.uk>
git: update to 1.8.2.2

No changes required, just bump the submodule and Makefile version.

Signed-off-by: John Keeping <john@keeping.me.uk>
t0001: validate Git -rcN version numbers correctly

When creating the GIT-VERSION-FILE that we use to test that the version
of Git in git/ is the same as in the CGit Makefile, Git applies the
transform "s/-/./g" to the version string.  This doesn't affect released
versions but does change RC version numbers such as 1.8.3-rc0.

While CGit should only refer to a released Git version in general, it is
useful to developers who want to test upcoming Git releases if the tests
do work with RCs, so change t0001 to apply the same transform to our
Makefile version before comparing it to the contents of
GIT-VERSION-FILE.

Signed-off-by: John Keeping <john@keeping.me.uk>