Commit 4b7cc26 (git-am: use printf instead of echo on user-supplied
strings, 2007-05-25) fixed a bug where subjects with newlines would
cause git-am to echo multiple lines when it says "Applying: <subject>".
This test ensures that fix stays valid.
Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>