build: allow correct tools to be used for dmg creation.
build: allow correct tools to be used for dmg creation.

These come from the enironment, which will be properly setup by Make with
the paths gleaned from configure.
Also don't crash if plugins are static.

Crowndev/crowncoin,syscoin/syscoin,Crowndev/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,syscoin/syscoin,Crowndev/crowncoin,syscoin/syscoin,Crowndev/crowncoin,domob1812/crowncoin,syscoin/syscoin,Infernoman/crowncoin,domob1812/crowncoin,Infernoman/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,syscoin/syscoin,domob1812/crowncoin,syscoin/syscoin,Infernoman/crowncoin,Infernoman/crowncoin,syscoin/syscoin,syscoin/syscoin