/usr/include/telepathy-1.0/rtcom-telepathy-glib/ is in librtcom-telepathy-glib-dev 0.1.38~git.1.e4dae27b-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/cli-channel.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/cli-connection.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/cli-stream-engine.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/enums.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/gtypes.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/interfaces.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/svc-channel.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/_gen/svc-connection.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/extensions.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/mailbox-extensions.h
/usr/include/telepathy-1.0/rtcom-telepathy-glib/stream-engine.h