wildmatch test: mark test as EXPENSIVE_ON_WINDOWS

Mark the newly added test which creates test files on-disk as
EXPENSIVE_ON_WINDOWS. According to [1] it takes almost ten minutes to
run this test file on Windows after this recent change, but just a few
seconds on Linux as noted in my [2].

This could be done faster by exiting earlier, however by using this
pattern we'll emit "skip" lines for each skipped test, making it clear
we're not running a lot of them in the TAP output, at the cost of some
overhead.

1. nycvar.QRO.7.76.6.1801061337020.1337@wbunaarf-fpuvaqryva.tvgsbejvaqbjf.bet
   (https://public-inbox.org/git/nycvar.QRO.7.76.6.1801061337020.1337@wbunaarf-fpuvaqryva.tvgsbejvaqbjf.bet/)

2. 87mv1raz9p.fsf@evledraar.gmail.com
   (https://public-inbox.org/git/87mv1raz9p.fsf@evledraar.gmail.com/)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3070-wildmatch.sh

@@ -109,36 +109,36 @@ match_with_ls_files() {
 	then
 		if test -e .git/created_test_file
 		then
-			test_expect_success "$match_function (via ls-files): match dies on '$pattern' '$text'" "
+			test_expect_success EXPENSIVE_ON_WINDOWS "$match_function (via ls-files): match dies on '$pattern' '$text'" "
 				printf '%s' '$text' >expect &&
 				test_must_fail git$ls_files_args ls-files -z -- '$pattern'
 			"
 		else
-			test_expect_failure "$match_function (via ls-files): match skip '$pattern' '$text'" 'false'
+			test_expect_failure EXPENSIVE_ON_WINDOWS "$match_function (via ls-files): match skip '$pattern' '$text'" 'false'
 		fi
 	elif test "$match_expect" = 1
 	then
 		if test -e .git/created_test_file
 		then
-			test_expect_success "$match_function (via ls-files): match '$pattern' '$text'" "
+			test_expect_success EXPENSIVE_ON_WINDOWS "$match_function (via ls-files): match '$pattern' '$text'" "
 				printf '%s' '$text' >expect &&
 				git$ls_files_args ls-files -z -- '$pattern' >actual.raw 2>actual.err &&
 				$match_stdout_stderr_cmp
 			"
 		else
-			test_expect_failure "$match_function (via ls-files): match skip '$pattern' '$text'" 'false'
+			test_expect_failure EXPENSIVE_ON_WINDOWS "$match_function (via ls-files): match skip '$pattern' '$text'" 'false'
 		fi
 	elif test "$match_expect" = 0
 	then
 		if test -e .git/created_test_file
 		then
-			test_expect_success "$match_function (via ls-files): no match '$pattern' '$text'" "
+			test_expect_success EXPENSIVE_ON_WINDOWS "$match_function (via ls-files): no match '$pattern' '$text'" "
 				>expect &&
 				git$ls_files_args ls-files -z -- '$pattern' >actual.raw 2>actual.err &&
 				$match_stdout_stderr_cmp
 			"
 		else
-			test_expect_failure "$match_function (via ls-files): no match skip '$pattern' '$text'" 'false'
+			test_expect_failure EXPENSIVE_ON_WINDOWS "$match_function (via ls-files): no match skip '$pattern' '$text'" 'false'
 		fi
 	else
 		test_expect_success "PANIC: Test framework error. Unknown matches value $match_expect" 'false'
@@ -174,7 +174,7 @@ match() {
 		pattern=${10}
 	fi
 
-	test_expect_success 'cleanup after previous file test' '
+	test_expect_success EXPENSIVE_ON_WINDOWS 'cleanup after previous file test' '
 		if test -e .git/created_test_file
 		then
 			git reset &&
@@ -184,7 +184,7 @@ match() {
 
 	printf '%s' "$text" >.git/expected_test_file
 
-	test_expect_success "setup match file test for $text" '
+	test_expect_success EXPENSIVE_ON_WINDOWS "setup match file test for $text" '
 		file=$(cat .git/expected_test_file) &&
 		if should_create_test_file "$file"
 		then