[parrot/parrot] d21aaf: [build] improve installable binaries on darwin

[GitHub]

  Branch: refs/heads/smoke-me/darwin-build-gh1096
  Home:   https://github.com/parrot/parrot
  Commit: d21aaf8a5adca9aecf200ad44a7f99b9a3b9e06c
      https://github.com/parrot/parrot/commit/d21aaf8a5adca9aecf200ad44a7f99b9a3b9e06c
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2015-12-13 (Sun, 13 Dec 2015)

  Changed paths:
    M config/gen/makefiles/root.in

  Log Message:
  -----------
  [build] improve installable binaries on darwin

need to seperate the 2 dylibs, but use the same name.
this is racy, only use -j1 on darwin for make all or make install