Merge branch 'tb/test-lint-echo-e'

The test linter has been taught that we do not like "echo -e".

* tb/test-lint-echo-e:
  test-lint: echo -e (or -E) is not portable

Author: gitster

t/check-non-portable-shell.pl

@@ -17,7 +17,7 @@ sub err {
 while (<>) {
 	chomp;
 	/\bsed\s+-i/ and err 'sed -i is not portable';
-	/\becho\s+-n/ and err 'echo -n is not portable (please use printf)';
+	/\becho\s+-[neE]/ and err 'echo with option is not portable (please use printf)';
 	/^\s*declare\s+/ and err 'arrays/declare not portable';
 	/^\s*[^#]\s*which\s/ and err 'which is not portable (please use type)';
 	/\btest\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';