/usr/include/ is in liballjoyntcl-dev-1504 15.04b-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/x86_64-linux-gnu/
/usr/include/x86_64-linux-gnu/aj_about.h
/usr/include/x86_64-linux-gnu/aj_ardp.h
/usr/include/x86_64-linux-gnu/aj_auth_listener.h
/usr/include/x86_64-linux-gnu/aj_authentication.h
/usr/include/x86_64-linux-gnu/aj_bufio.h
/usr/include/x86_64-linux-gnu/aj_bus.h
/usr/include/x86_64-linux-gnu/aj_cert.h
/usr/include/x86_64-linux-gnu/aj_config.h
/usr/include/x86_64-linux-gnu/aj_connect.h
/usr/include/x86_64-linux-gnu/aj_crc16.h
/usr/include/x86_64-linux-gnu/aj_creds.h
/usr/include/x86_64-linux-gnu/aj_crypto.h
/usr/include/x86_64-linux-gnu/aj_crypto_ecc.h
/usr/include/x86_64-linux-gnu/aj_crypto_sha2.h
/usr/include/x86_64-linux-gnu/aj_debug.h
/usr/include/x86_64-linux-gnu/aj_disco.h
/usr/include/x86_64-linux-gnu/aj_guid.h
/usr/include/x86_64-linux-gnu/aj_helper.h
/usr/include/x86_64-linux-gnu/aj_init.h
/usr/include/x86_64-linux-gnu/aj_introspect.h
/usr/include/x86_64-linux-gnu/aj_link_timeout.h
/usr/include/x86_64-linux-gnu/aj_msg.h
/usr/include/x86_64-linux-gnu/aj_msg_priv.h
/usr/include/x86_64-linux-gnu/aj_net.h
/usr/include/x86_64-linux-gnu/aj_nvram.h
/usr/include/x86_64-linux-gnu/aj_peer.h
/usr/include/x86_64-linux-gnu/aj_serial.h
/usr/include/x86_64-linux-gnu/aj_serial_rx.h
/usr/include/x86_64-linux-gnu/aj_serial_tx.h
/usr/include/x86_64-linux-gnu/aj_serio.h
/usr/include/x86_64-linux-gnu/aj_status.h
/usr/include/x86_64-linux-gnu/aj_std.h
/usr/include/x86_64-linux-gnu/aj_util.h
/usr/include/x86_64-linux-gnu/aj_version.h
/usr/include/x86_64-linux-gnu/aj_wifi_ctrl.h
/usr/include/x86_64-linux-gnu/alljoyn.h