Package tests/t_file_check.py

The file tests/t_file_check.py is missing from the tar
because it's not listed in tests/Makefile.am in the
EXTRA_DIST variable.
Add the test file.

Fixes: #309
Signed-off-by: Florence Blanc-Renaud <[email protected]>

Author: flo-renaud

Diff for: tests/Makefile.am

@@ -13,6 +13,7 @@ EXTRA_DIST = \
 	t_basic_k5_two_users.py \
 	t_basic_proxy.py \
 	t_basic_timeout.py \
+	t_file_check.py \
 	t_hostname_acceptor.py \
 	t_localname.py \
 	t_mech_name.py \