Giraph's tar.gz distributable build does not include the bin/ directory (or the run scripts!) any more

For some reason, when I try to build the giraph-blah-blah-bin-blah.tar.gz to explode and run remotely from a gateway machine to my Hadoop cluster, the directory tree I unpack does not include all the directories it used to. in particular, we need the bin/ directory to be in there, because it contains all the giraph run scripts we know and love.

This seems to happen on at least 3 of the maven -P build profiles I tried.