Several tests: cd inside subshell instead of around

Fixed all places where it was a straightforward change from cd'ing into a
directory and back via "cd .." to a cd inside a subshell.

Found these places with "git grep -w "cd \.\.".

Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t9104-git-svn-follow-parent.sh b/t/t9104-git-svn-follow-parent.sh
index bbfd7f4..236e7de 100755
--- a/t/t9104-git-svn-follow-parent.sh
+++ b/t/t9104-git-svn-follow-parent.sh
@@ -8,13 +8,13 @@
 
 test_expect_success 'initialize repo' '
 	mkdir import &&
-	cd import &&
+	(cd import &&
 	mkdir -p trunk &&
 	echo hello > trunk/readme &&
-	svn_cmd import -m "initial" . "$svnrepo" &&
-	cd .. &&
+	svn_cmd import -m "initial" . "$svnrepo"
+	) &&
 	svn_cmd co "$svnrepo" wc &&
-	cd wc &&
+	(cd wc &&
 	echo world >> trunk/readme &&
 	poke trunk/readme &&
 	svn_cmd commit -m "another commit" &&
@@ -22,8 +22,8 @@
 	svn_cmd mv trunk thunk &&
 	echo goodbye >> thunk/readme &&
 	poke thunk/readme &&
-	svn_cmd commit -m "bye now" &&
-	cd ..
+	svn_cmd commit -m "bye now"
+	)
 	'
 
 test_expect_success 'init and fetch a moved directory' '
@@ -85,11 +85,11 @@
 test_expect_success 'follow higher-level parent' '
         svn mkdir -m "follow higher-level parent" "$svnrepo"/blob &&
         svn co "$svnrepo"/blob blob &&
-        cd blob &&
+	(cd blob &&
                 echo hi > hi &&
                 svn add hi &&
-                svn commit -m "hihi" &&
-                cd ..
+		svn commit -m "hihi"
+		) &&
         svn mkdir -m "new glob at top level" "$svnrepo"/glob &&
         svn mv -m "move blob down a level" "$svnrepo"/blob "$svnrepo"/glob/blob &&
         git svn init --minimize-url -i blob "$svnrepo"/glob/blob &&
@@ -117,18 +117,18 @@
 	   import/trunk/subversion/bindings/swig/perl/t/larger-parent &&
 	  echo "bad delete test 2" > \
 	   import/trunk/subversion/bindings/swig/perl/another-larger &&
-	cd import &&
-	  svn import -m "r9270 test" . "$svnrepo"/r9270 &&
-	cd .. &&
+	(cd import &&
+	  svn import -m "r9270 test" . "$svnrepo"/r9270
+	) &&
 	svn_cmd co "$svnrepo"/r9270/trunk/subversion/bindings/swig/perl r9270 &&
-	cd r9270 &&
+	(cd r9270 &&
 	  svn mkdir native &&
 	  svn mv t native/t &&
 	  for i in a b c; do svn mv $i.pm native/$i.pm; done &&
 	  echo z >> native/t/c.t &&
 	  poke native/t/c.t &&
-	  svn commit -m "reorg test" &&
-	cd .. &&
+	  svn commit -m "reorg test"
+	) &&
 	git svn init --minimize-url -i r9270-t \
 	  "$svnrepo"/r9270/trunk/subversion/bindings/swig/perl/native/t &&
 	git svn fetch -i r9270-t &&