Fix tests under GETTEXT_POISON on git-apply

Use the i18n-specific test functions in test scripts for git-apply.
This issue was was introduced in the following commits:

    de373 i18n: apply: mark parseopt strings for translation
    3638e i18n: apply: mark strings for translation

and been broken under GETTEXT_POISON=YesPlease since.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4012-diff-binary.sh

@@ -63,7 +63,7 @@ test_expect_success 'apply --numstat understands diff --binary format' '
 
 # apply needs to be able to skip the binary material correctly
 # in order to report the line number of a corrupt patch.
-test_expect_success 'apply detecting corrupt patch correctly' '
+test_expect_success C_LOCALE_OUTPUT 'apply detecting corrupt patch correctly' '
 	git diff >output &&
 	sed -e "s/-CIT/xCIT/" <output >broken &&
 	test_must_fail git apply --stat --summary broken 2>detected &&
@@ -73,7 +73,7 @@ test_expect_success 'apply detecting corrupt patch correctly' '
 	test "$detected" = xCIT
 '
 
-test_expect_success 'apply detecting corrupt patch correctly' '
+test_expect_success C_LOCALE_OUTPUT 'apply detecting corrupt patch correctly' '
 	git diff --binary | sed -e "s/-CIT/xCIT/" >broken &&
 	test_must_fail git apply --stat --summary broken 2>detected &&
 	detected=`cat detected` &&

t/t4120-apply-popt.sh

@@ -32,7 +32,7 @@ test_expect_success 'apply git diff with -p2' '
 test_expect_success 'apply with too large -p' '
 	cp file1.saved file1 &&
 	test_must_fail git apply --stat -p3 patch.file 2>err &&
-	grep "removing 3 leading" err
+	test_i18ngrep "removing 3 leading" err
 '
 
 test_expect_success 'apply (-p2) traditional diff with funny filenames' '
@@ -54,7 +54,7 @@ test_expect_success 'apply (-p2) traditional diff with funny filenames' '
 test_expect_success 'apply with too large -p and fancy filename' '
 	cp file1.saved file1 &&
 	test_must_fail git apply --stat -p3 patch.escaped 2>err &&
-	grep "removing 3 leading" err
+	test_i18ngrep "removing 3 leading" err
 '
 
 test_expect_success 'apply (-p2) diff, mode change only' '

t/t4133-apply-filenames.sh

@@ -30,9 +30,9 @@ EOF
 
 test_expect_success 'apply diff with inconsistent filenames in headers' '
 	test_must_fail git apply bad1.patch 2>err &&
-	grep "inconsistent new filename" err &&
+	test_i18ngrep "inconsistent new filename" err &&
 	test_must_fail git apply bad2.patch 2>err &&
-	grep "inconsistent old filename" err
+	test_i18ngrep "inconsistent old filename" err
 '
 
 test_done