update to latest upstream git #15468
Description
The git self-tests fail on OSX 10.8, 10.9 because of braindamage in Apple's regex library. This is worked around in upstream git, so just update to the latest and greatest:
*** t0070-fundamental.sh ***
ok 1 - character classes (isspace, isalpha etc.)
ok 2 - mktemp to nonexistent directory prints filename
ok 3 - mktemp to unwritable directory prints filename
not ok - 4 check for a bug in the regex routines
#
# # if this test fails, re-build git with NO_REGEX=1
# test-regex
#
# failed 1 among 4 test(s)
1..4
make[5]: *** [t0070-fundamental.sh] Error 1
make[4]: *** [test] Error 2
make[3]: *** [test] Error 2
Error running git's combined build/test suite.
Upstream tarball: https://www.kernel.org/pub/software/scm/git/git-1.8.4.4.tar.bz2
Depends on #14482
CC: @haraldschilly
Component: packages: standard
Author: Volker Braun
Branch/Commit: u/vbraun/git_1_8_4_4 @ f6fcc98
Reviewer: R. Andrew Ohana
Issue created by migration from https://trac.sagemath.org/ticket/15468