babeld wouldn't build in a dist tarball without this.
From: Denis Ovsienko <infrastation@yandex.ru>
Signed-off-by: Juliusz Chroboczek <jch@pps.jussieu.fr>
[fixed up git message]
Signed-off-by: David Lamparter <equinox@diac24.net>
noinst_HEADERS = \
babel_zebra.h net.h kernel.h util.h source.h neighbour.h \
route.h xroute.h message.h resend.h babel_interface.h babeld.h \
- babel_filter.h
+ babel_filter.h babel_main.h
babeld_SOURCES = \
babel_main.c $(libbabel_a_SOURCES)