Added mssh.1 to instalation

Makefile.am

@@ -11,3 +11,5 @@ if GCONF_SCHEMAS_INSTALL
 install-data-local:
 	GCONF_CONFIG_SOURCE=$(GCONF_SCHEMA_CONFIG_SOURCE) $(GCONFTOOL) --makefile-install-rule $(top_builddir)/$(schema_DATA)
 endif
+
+man1_MANS = mssh.1