tests: move test_lazy_prereq JGIT to test-lib.sh

This enables JGIT to be used as a prereq in invocations of
test_expect_success (and other functions) in other test scripts.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5310-pack-bitmaps.sh

@@ -158,10 +158,6 @@ test_expect_success 'pack with missing parent' '
 	git pack-objects --stdout --revs <revs >/dev/null
 '
 
-test_lazy_prereq JGIT '
-	type jgit
-'
-
 test_expect_success JGIT 'we can read jgit bitmaps' '
 	git clone . compat-jgit &&
 	(

t/test-lib.sh

@@ -1072,6 +1072,10 @@ test_lazy_prereq NOT_ROOT '
 	test "$uid" != 0
 '
 
+test_lazy_prereq JGIT '
+	type jgit
+'
+
 # SANITY is about "can you correctly predict what the filesystem would
 # do by only looking at the permission bits of the files and
 # directories?"  A typical example of !SANITY is running the test