Add a trivial test that the mosh script works without needing tmux

None of the previous tests even ran the mosh script unless tmux ≥ 1.8 is
installed.  Thus ‘make check’ was “passing” on, e.g., RHEL 6 even though
its Perl is too old (5.10.1).

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

src/tests/Makefile.am

@@ -3,6 +3,7 @@ EXTRA_DIST = \
 	e2e-test e2e-test-server \
 	e2e-test-subrs \
 	mosh-client mosh-server \
+	local.test \
 	$(displaytests) \
 	emulation-attributes.test
 
@@ -34,8 +35,8 @@ displaytests = \
 	unicode-later-combining.test \
 	window-resize.test
 
-check_PROGRAMS = ocb-aes encrypt-decrypt base64 nonce-incr
-TESTS = ocb-aes encrypt-decrypt base64 nonce-incr $(displaytests)
+check_PROGRAMS = ocb-aes encrypt-decrypt base64 nonce-incr inpty
+TESTS = ocb-aes encrypt-decrypt base64 nonce-incr local.test $(displaytests)
 XFAIL_TESTS = \
 	e2e-failure.test \
 	emulation-attributes-256color8.test
@@ -60,6 +61,10 @@ nonce_incr_SOURCES = nonce-incr.cc
 nonce_incr_CPPFLAGS = -I$(srcdir)/../network -I$(srcdir)/../crypto -I$(srcdir)/../util $(CRYPTO_CFLAGS)
 nonce_incr_LDADD = ../network/libmoshnetwork.a ../crypto/libmoshcrypto.a ../util/libmoshutil.a $(CRYPTO_LIBS)
 
+inpty_SOURCES = inpty.cc
+inpty_CPPFLAGS = -I$(srcdir)/../util
+inpty_LDADD = ../util/libmoshutil.a $(LIBUTIL)
+
 clean-local: clean-local-check
 .PHONY: clean-local-check
 clean-local-check: