(in case we get reports about slow launch times, this will
help clarify what's happening)
(cherry picked from commit 2eea3483cf893f8f81bacd434b31408dfb38cb06)
Don't hardcode X11.app's path in the launchd plist.
Only install the launchd plist if we --enable-launchd.
(cherry picked from commit 6b74c535dc331d1d621b2541492a3336f69d70a2)
Leaving xpr unflattened since we want modularity to replace that with xpc (XPluginComposite) at some point
(cherry picked from commit 48e6a75fbdd0fee86e364f02ace83f20b312a2b2)
Ben Byer
Jeremy Huddleston