Jean-Marc Lasgouttes d9c39232ac Reduce the amount of needed boost headers
boost/signals2.hpp is a convenience header, it seems that
boost/signals2/signal.hpp is enough for our needs.

This allows to get rid of 6MiB of header files in 3rdparty/boost (and
probably to speed-up compilation).
2020-12-09 14:50:18 +01:00
..
2020-10-25 17:31:41 +01:00