t915{0,1}: use $TEST_DIRECTORY

Because --root can put our trash directories elsewhere,
using ".." may not always work.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t9150-svk-mergetickets.sh

@@ -8,7 +8,8 @@ test_description='git-svn svk merge tickets'
 . ./lib-git-svn.sh
 
 test_expect_success 'load svk depot' "
-	svnadmin load -q '$rawsvnrepo' < '../t9150/svk-merge.dump' &&
+	svnadmin load -q '$rawsvnrepo' \
+	  < '$TEST_DIRECTORY/t9150/svk-merge.dump' &&
 	git svn init --minimize-url -R svkmerge \
 	  -T trunk -b branches '$svnrepo' &&
 	git svn fetch --all

t/t9151-svn-mergeinfo.sh

@@ -8,7 +8,8 @@ test_description='git-svn svn mergeinfo properties'
 . ./lib-git-svn.sh
 
 test_expect_success 'load svn dump' "
-	svnadmin load -q '$rawsvnrepo' < '../t9151/svn-mergeinfo.dump' &&
+	svnadmin load -q '$rawsvnrepo' \
+	  < '$TEST_DIRECTORY/t9151/svn-mergeinfo.dump' &&
 	git svn init --minimize-url -R svnmerge \
 	  -T trunk -b branches '$svnrepo' &&
 	git svn fetch --all