Fix tests breaking when checkout path contains shell metacharacters

This fixes the remainder of the issues where the test script itself is at
fault for failing when the git checkout path contains whitespace or other
shell metacharacters.

The majority of git svn tests used the idiom

  test_expect_success "title" "test script using $svnrepo"

These were changed to have the test script in single-quotes:

  test_expect_success "title" 'test script using "$svnrepo"'

which unfortunately makes the patch appear larger than it really is.

One consequence of this change is that in the verbose test output the
value of $svnrepo (and in some cases other variables, too) is no
longer expanded, i.e. previously we saw

  * expecting success:
	test script using /path/to/git/t/trash/svnrepo

but now it is:

  * expecting success:
	test script using "$svnrepo"

Signed-off-by: Bryan Donlan <bdonlan@fushizen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t9114-git-svn-dcommit-merge.sh b/t/t9114-git-svn-dcommit-merge.sh
index 225060b..61d7781 100755
--- a/t/t9114-git-svn-dcommit-merge.sh
+++ b/t/t9114-git-svn-dcommit-merge.sh
@@ -34,35 +34,35 @@
 EOF
 }
 
-test_expect_success 'setup svn repository' "
-	svn co $svnrepo mysvnwork &&
+test_expect_success 'setup svn repository' '
+	svn co "$svnrepo" mysvnwork &&
 	mkdir -p mysvnwork/trunk &&
 	cd mysvnwork &&
 		big_text_block >> trunk/README &&
 		svn add trunk &&
-		svn ci -m 'first commit' trunk &&
+		svn ci -m "first commit" trunk &&
 		cd ..
-	"
+	'
 
-test_expect_success 'setup git mirror and merge' "
-	git svn init $svnrepo -t tags -T trunk -b branches &&
+test_expect_success 'setup git mirror and merge' '
+	git svn init "$svnrepo" -t tags -T trunk -b branches &&
 	git svn fetch &&
 	git checkout --track -b svn remotes/trunk &&
 	git checkout -b merge &&
 	echo new file > new_file &&
 	git add new_file &&
-	git commit -a -m 'New file' &&
+	git commit -a -m "New file" &&
 	echo hello >> README &&
-	git commit -a -m 'hello' &&
+	git commit -a -m "hello" &&
 	echo add some stuff >> new_file &&
-	git commit -a -m 'add some stuff' &&
+	git commit -a -m "add some stuff" &&
 	git checkout svn &&
 	mv -f README tmp &&
 	echo friend > README &&
 	cat tmp >> README &&
-	git commit -a -m 'friend' &&
+	git commit -a -m "friend" &&
 	git pull . merge
-	"
+	'
 
 test_debug 'gitk --all & sleep 1'