Merge branch 'rs/zip-tests' into maint

* rs/zip-tests:
t5003: check if unzip supports symlinks
t5000, t5003: move ZIP tests into their own script
t0024, t5000: use test_lazy_prereq for UNZIP
t0024, t5000: clear variable UNZIP, use GIT_UNZIP instead

diff --combined t/test-lib.sh
index f50f8341d40c6ec87565d01a263d97209fb68680,c9a6b03953aa77b6c9f8c64c64febe144ca80feb..fc42d3a9c4f7e0bf98b657826163a04f2905f366
--- 1/t/test-lib.sh
--- 2/t/test-lib.sh
+++ b/t/test-lib.sh
@@@ -85,6 -85,7 +85,7 @@@ unset VISUAL EMAIL LANGUAGE COLUMNS $("
                .*_TEST
                PROVE
                VALGRIND
+               UNZIP
                PERF_AGGREGATING_LATER
        ));
        my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
@@@ -128,6 -129,7 +129,7 @@@ f
  unset CDPATH
  
  unset GREP_OPTIONS
+ unset UNZIP
  
  case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
  1|2|true)
@@@ -389,8 -391,7 +391,8 @@@ test_done () 
        then
                test_results_dir="$TEST_OUTPUT_DIRECTORY/test-results"
                mkdir -p "$test_results_dir"
 -              test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 +              base=${0##*/}
 +              test_results_path="$test_results_dir/${base%.sh}-$$.counts"
  
                cat >>"$test_results_path" <<-EOF
                total $test_count
@@@ -739,12 -740,6 +741,12 @@@ test_lazy_prereq UTF8_NFD_TO_NFC 
        esac
  '
  
 +test_lazy_prereq AUTOIDENT '
 +      sane_unset GIT_AUTHOR_NAME &&
 +      sane_unset GIT_AUTHOR_EMAIL &&
 +      git var GIT_AUTHOR_IDENT
 +'
 +
  # When the tests are run as root, permission tests will report that
  # things are writable when they shouldn't be.
  test -w / || test_set_prereq SANITY