Merge branch 'js/vsts-ci'

Prepare to run test suite on Azure Pipeline.

* js/vsts-ci: (22 commits)
  test-date: drop unused parameter to getnanos()
  ci: parallelize testing on Windows
  ci: speed up Windows phase
  tests: optionally skip bin-wrappers/
  t0061: workaround issues with --with-dashes and RUNTIME_PREFIX
  tests: add t/helper/ to the PATH with --with-dashes
  mingw: try to work around issues with the test cleanup
  tests: include detailed trace logs with --write-junit-xml upon failure
  tests: avoid calling Perl just to determine file sizes
  README: add a build badge (status of the Azure Pipelines build)
  mingw: be more generous when wrapping up the setitimer() emulation
  ci: use git-sdk-64-minimal build artifact
  ci: add a Windows job to the Azure Pipelines definition
  Add a build definition for Azure DevOps
  ci/lib.sh: add support for Azure Pipelines
  tests: optionally write results as JUnit-style .xml
  test-date: add a subcommand to measure times in shell scripts
  ci: use a junction on Windows instead of a symlink
  ci: inherit --jobs via MAKEFLAGS in run-build-and-tests
  ci/lib.sh: encapsulate Travis-specific things
  ...

diff --cc Makefile
Simple merge

diff --cc ci/install-dependencies.sh
index dc719876bb12309c086952d275085d8d3d0690e6,bcdcc715924c53bbcf1418b7ddeee426c94468b8..608ff964dee0c15c2c2a97c15fc5a86d5138488a
--- 1/ci/install-dependencies.sh
--- 2/ci/install-dependencies.sh
+++ b/ci/install-dependencies.sh
@@@ -37,14 -37,10 +37,15 @@@ osx-clang|osx-gcc
        brew update --quiet
        # Uncomment this if you want to run perf tests:
        # brew install gnu-time
-       brew install git-lfs gettext
+       test -z "$BREW_INSTALL_PACKAGES" ||
+       brew install $BREW_INSTALL_PACKAGES
        brew link --force gettext
        brew install caskroom/cask/perforce
 +      case "$jobname" in
 +      osx-gcc)
 +              brew link gcc@8
 +              ;;
 +      esac
        ;;
  StaticAnalysis)
        sudo apt-get -q update

diff --cc ci/lib.sh
index a479613a5748858774994f67fdcd29600b95d1ba,c2bc6c68b9fef34be4e19cbb0b3ca94f794fba68..16f4ecbc67196b19f45d4e5c2273b8ea35e0895d
--- 1/ci/lib-travisci.sh
--- 2/ci/lib.sh
+++ b/ci/lib.sh
@@@ -81,7 -80,60 +80,60 @@@ check_unignored_build_artifacts (
  # and installing dependencies.
  set -ex
  
- cache_dir="$HOME/travis-cache"
+ if test true = "$TRAVIS"
+ then
+       CI_TYPE=travis
+       # When building a PR, TRAVIS_BRANCH refers to the *target* branch. Not
+       # what we want here. We want the source branch instead.
+       CI_BRANCH="${TRAVIS_PULL_REQUEST_BRANCH:-$TRAVIS_BRANCH}"
+       CI_COMMIT="$TRAVIS_COMMIT"
+       CI_JOB_ID="$TRAVIS_JOB_ID"
+       CI_JOB_NUMBER="$TRAVIS_JOB_NUMBER"
+       CI_OS_NAME="$TRAVIS_OS_NAME"
+       CI_REPO_SLUG="$TRAVIS_REPO_SLUG"
+ 
+       cache_dir="$HOME/travis-cache"
+ 
+       url_for_job_id () {
+               echo "https://travis-ci.org/$CI_REPO_SLUG/jobs/$1"
+       }
+ 
+       BREW_INSTALL_PACKAGES="git-lfs gettext"
+       export GIT_PROVE_OPTS="--timer --jobs 3 --state=failed,slow,save"
+       export GIT_TEST_OPTS="--verbose-log -x --immediate"
+       export MAKEFLAGS="--jobs=2"
+ elif test -n "$SYSTEM_COLLECTIONURI" || test -n "$SYSTEM_TASKDEFINITIONSURI"
+ then
+       CI_TYPE=azure-pipelines
+       # We are running in Azure Pipelines
+       CI_BRANCH="$BUILD_SOURCEBRANCH"
+       CI_COMMIT="$BUILD_SOURCEVERSION"
+       CI_JOB_ID="$BUILD_BUILDID"
+       CI_JOB_NUMBER="$BUILD_BUILDNUMBER"
+       CI_OS_NAME="$(echo "$AGENT_OS" | tr A-Z a-z)"
+       test darwin != "$CI_OS_NAME" || CI_OS_NAME=osx
+       CI_REPO_SLUG="$(expr "$BUILD_REPOSITORY_URI" : '.*/\([^/]*/[^/]*\)$')"
+       CC="${CC:-gcc}"
+ 
+       # use a subdirectory of the cache dir (because the file share is shared
+       # among *all* phases)
+       cache_dir="$HOME/test-cache/$SYSTEM_PHASENAME"
+ 
+       url_for_job_id () {
+               echo "$SYSTEM_TASKDEFINITIONSURI$SYSTEM_TEAMPROJECT/_build/results?buildId=$1"
+       }
+ 
 -      BREW_INSTALL_PACKAGES=
++      BREW_INSTALL_PACKAGES=gcc@8
+       export GIT_PROVE_OPTS="--timer --jobs 10 --state=failed,slow,save"
+       export GIT_TEST_OPTS="--verbose-log -x --write-junit-xml"
+       export MAKEFLAGS="--jobs=10"
+       test windows_nt != "$CI_OS_NAME" ||
+       GIT_TEST_OPTS="--no-chain-lint --no-bin-wrappers $GIT_TEST_OPTS"
+ else
+       echo "Could not identify CI type" >&2
+       exit 1
+ fi
+ 
  good_trees_file="$cache_dir/good-trees"
  
  mkdir -p "$cache_dir"
@@@ -96,9 -148,10 +148,7 @@@ f
  
  export DEVELOPER=1
  export DEFAULT_TEST_TARGET=prove
- export GIT_PROVE_OPTS="--timer --jobs 3 --state=failed,slow,save"
- export GIT_TEST_OPTS="--verbose-log -x --immediate"
  export GIT_TEST_CLONE_2GB=YesPlease
 -if [ "$jobname" = linux-gcc ]; then
 -      export CC=gcc-8
 -fi
  
  case "$jobname" in
  linux-clang|linux-gcc)

diff --cc ci/run-build-and-tests.sh
index 84431c097eb8dffa1b540ee61d6c047239afd18a,74d838ea01883031246cb83342c5daaa9545333a..cdd291344047394b26c17635d4507ad7ce14b542
--- 1/ci/run-build-and-tests.sh
--- 2/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@@ -3,12 -3,15 +3,15 @@@
  # Build and test Git
  #
  
- . ${0%/*}/lib-travisci.sh
+ . ${0%/*}/lib.sh
  
- ln -s "$cache_dir/.prove" t/.prove
+ case "$CI_OS_NAME" in
+ windows*) cmd //c mklink //j t\\.prove "$(cygpath -aw "$cache_dir/.prove")";;
+ *) ln -s "$cache_dir/.prove" t/.prove;;
+ esac
  
- make --jobs=2
+ make
 -make --quiet test
 +make test
  if test "$jobname" = "linux-gcc"
  then
        export GIT_TEST_SPLIT_INDEX=yes

diff --cc ci/run-linux32-build.sh
index 26c168a0165522655e4e80988ba553b314b333f5,09e9276e1276e089fdde09da4cb89f15404be416..e3a193adbce39cb62b3be20b269444188a900613
--- 1/ci/run-linux32-build.sh
--- 2/ci/run-linux32-build.sh
+++ b/ci/run-linux32-build.sh
@@@ -55,6 -55,6 +55,6 @@@ linux32 --32bit i386 su -m -l $CI_USER 
        set -ex
        cd /usr/src/git
        test -n "$cache_dir" && ln -s "$cache_dir/.prove" t/.prove
-       make --jobs=2
+       make
 -      make --quiet test
 +      make test
  '

diff --cc compat/mingw.c
Simple merge

diff --cc t/README
Simple merge

diff --cc t/helper/test-date.c
Simple merge

diff --cc t/helper/test-tool.c
Simple merge

diff --cc t/helper/test-tool.h
Simple merge

diff --cc t/t0061-run-command.sh
Simple merge

diff --cc t/test-lib.sh
Simple merge