Import from 1994 LISHA CVS repository

src/buf.c

src/buf_client.c

src/buf_stub.c

src/c_mbox.c

src/dir.c

src/dir_client.c

src/dir_stub.c

src/err.c

src/fil.c

src/fil_client.c

src/fil_stub.c

src/mbox.c

src/mbox_client.c

src/mbox_server.c

src/msg.c

src/posix.c

src/posix_client.c

src/shell.c

src/sun.c

src/tty.c