Avoid using non-portable `echo -n` in tests.

Expecting echo to recognise -n is a BSDism.  Using printf is far more
portable.

Discovered on OS X 10.5.5 in t4030-diff-textconv.sh and changed in all
the test scripts.

Signed-off-by: Brian Gernhardt <benji@silverinsanity.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t2005-checkout-index-symlinks.sh b/t/t2005-checkout-index-symlinks.sh
index ed12c4d..9fa5610 100755
--- a/t/t2005-checkout-index-symlinks.sh
+++ b/t/t2005-checkout-index-symlinks.sh
@@ -13,7 +13,7 @@
 test_expect_success \
 'preparation' '
 git config core.symlinks false &&
-l=$(echo -n file | git hash-object -t blob -w --stdin) &&
+l=$(printf file | git hash-object -t blob -w --stdin) &&
 echo "120000 $l	symlink" | git update-index --index-info'
 
 test_expect_success \
diff --git a/t/t2102-update-index-symlinks.sh b/t/t2102-update-index-symlinks.sh
index f195aef..1ed44ee 100755
--- a/t/t2102-update-index-symlinks.sh
+++ b/t/t2102-update-index-symlinks.sh
@@ -13,12 +13,12 @@
 test_expect_success \
 'preparation' '
 git config core.symlinks false &&
-l=$(echo -n file | git hash-object -t blob -w --stdin) &&
+l=$(printf file | git hash-object -t blob -w --stdin) &&
 echo "120000 $l	symlink" | git update-index --index-info'
 
 test_expect_success \
 'modify the symbolic link' '
-echo -n new-file > symlink &&
+printf new-file > symlink &&
 git update-index symlink'
 
 test_expect_success \
diff --git a/t/t4030-diff-textconv.sh b/t/t4030-diff-textconv.sh
index 1b09648..3aed1bb 100755
--- a/t/t4030-diff-textconv.sh
+++ b/t/t4030-diff-textconv.sh
@@ -105,7 +105,7 @@
 EOF
 # make a symlink the hard way that works on symlink-challenged file systems
 test_expect_failure 'textconv does not act on symlinks' '
-	echo -n frotz > file &&
+	printf frotz > file &&
 	git add file &&
 	git ls-files -s | sed -e s/100644/120000/ |
 		git update-index --index-info &&
diff --git a/t/t6025-merge-symlinks.sh b/t/t6025-merge-symlinks.sh
index 53892a5..433c4de 100755
--- a/t/t6025-merge-symlinks.sh
+++ b/t/t6025-merge-symlinks.sh
@@ -18,11 +18,11 @@
 git commit -m initial &&
 git branch b-symlink &&
 git branch b-file &&
-l=$(echo -n file | git hash-object -t blob -w --stdin) &&
+l=$(printf file | git hash-object -t blob -w --stdin) &&
 echo "120000 $l	symlink" | git update-index --index-info &&
 git commit -m master &&
 git checkout b-symlink &&
-l=$(echo -n file-different | git hash-object -t blob -w --stdin) &&
+l=$(printf file-different | git hash-object -t blob -w --stdin) &&
 echo "120000 $l	symlink" | git update-index --index-info &&
 git commit -m b-symlink &&
 git checkout b-file &&
diff --git a/t/t9400-git-cvsserver-server.sh b/t/t9400-git-cvsserver-server.sh
index c1850d2..6a37f71 100755
--- a/t/t9400-git-cvsserver-server.sh
+++ b/t/t9400-git-cvsserver-server.sh
@@ -424,7 +424,7 @@
 test_expect_success 'cvs update (-p)' '
     touch really-empty &&
     echo Line 1 > no-lf &&
-    echo -n Line 2 >> no-lf &&
+    printf "Line 2" >> no-lf &&
     git add really-empty no-lf &&
     git commit -q -m "Update -p test" &&
     git push gitcvs.git >/dev/null &&