The new 1.52 ebuild allows to disable the multi-threaded libraries and the threading library itself; while this is enabled by default, and there are enough packages requiring it anyway, it might be a good idea to get new dependencies in sooner rather than later. Using EAPI=4 you get the use dep defaults, which is what you want (as <boost-1.52 there is no such USE flag), but I don't want to bump eapi in your package just because. Thanks, Diego
