t3902 - skip test if file system doesn't support HT in names
t3902 - skip test if file system doesn't support HT in names

Windows / cygwin don't support HT, LF, or TAB in file name so this test
is meaningless there.

Signed-off-by: Mark Levedahl <3b407bf5be4e766a5c90d6368b78cbf1428cb79f@verizon.net>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git