t/t5503-tagfollow: change from skip_all=* to prereq skip

Change this test to skip test with test prerequisites, and to do setup
work in tests. This improves the skipped statistics on platforms where
the test isn't run.

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

t/t5503-tagfollow.sh

@@ -6,8 +6,11 @@ test_description='test automatic tag following'
 
 case $(uname -s) in
 *MINGW*)
-	skip_all="GIT_DEBUG_SEND_PACK not supported - skipping tests"
-	test_done
+	say "GIT_DEBUG_SEND_PACK not supported - skipping tests"
+	;;
+*)
+	test_set_prereq NOT_MINGW
+	;;
 esac
 
 # End state of the repository:
@@ -19,7 +22,7 @@ esac
 #     \   C - origin/cat    \
 #      origin/master         master
 
-test_expect_success setup '
+test_expect_success NOT_MINGW setup '
 	test_tick &&
 	echo ichi >file &&
 	git add file &&
@@ -42,12 +45,15 @@ test_expect_success setup '
 
 U=UPLOAD_LOG
 
+test_expect_success NOT_MINGW 'setup expect' '
 cat - <<EOF >expect
 #S
 want $A
 #E
 EOF
-test_expect_success 'fetch A (new commit : 1 connection)' '
+'
+
+test_expect_success NOT_MINGW 'fetch A (new commit : 1 connection)' '
 	rm -f $U
 	(
 		cd cloned &&
@@ -59,7 +65,7 @@ test_expect_success 'fetch A (new commit : 1 connection)' '
 	test_cmp expect actual
 '
 
-test_expect_success "create tag T on A, create C on branch cat" '
+test_expect_success NOT_MINGW "create tag T on A, create C on branch cat" '
 	git tag -a -m tag1 tag1 $A &&
 	T=$(git rev-parse --verify tag1) &&
 
@@ -71,13 +77,16 @@ test_expect_success "create tag T on A, create C on branch cat" '
 	git checkout master
 '
 
+test_expect_success NOT_MINGW 'setup expect' '
 cat - <<EOF >expect
 #S
 want $C
 want $T
 #E
 EOF
-test_expect_success 'fetch C, T (new branch, tag : 1 connection)' '
+'
+
+test_expect_success NOT_MINGW 'fetch C, T (new branch, tag : 1 connection)' '
 	rm -f $U
 	(
 		cd cloned &&
@@ -91,7 +100,7 @@ test_expect_success 'fetch C, T (new branch, tag : 1 connection)' '
 	test_cmp expect actual
 '
 
-test_expect_success "create commits O, B, tag S on B" '
+test_expect_success NOT_MINGW "create commits O, B, tag S on B" '
 	test_tick &&
 	echo O >file &&
 	git add file &&
@@ -107,13 +116,16 @@ test_expect_success "create commits O, B, tag S on B" '
 	S=$(git rev-parse --verify tag2)
 '
 
+test_expect_success NOT_MINGW 'setup expect' '
 cat - <<EOF >expect
 #S
 want $B
 want $S
 #E
 EOF
-test_expect_success 'fetch B, S (commit and tag : 1 connection)' '
+'
+
+test_expect_success NOT_MINGW 'fetch B, S (commit and tag : 1 connection)' '
 	rm -f $U
 	(
 		cd cloned &&
@@ -127,13 +139,16 @@ test_expect_success 'fetch B, S (commit and tag : 1 connection)' '
 	test_cmp expect actual
 '
 
+test_expect_success NOT_MINGW 'setup expect' '
 cat - <<EOF >expect
 #S
 want $B
 want $S
 #E
 EOF
-test_expect_success 'new clone fetch master and tags' '
+'
+
+test_expect_success NOT_MINGW 'new clone fetch master and tags' '
 	git branch -D cat
 	rm -f $U
 	(