Mac Installer - Can't find druntime/import and phobos/src after install

[bryan costanich]

Jacob: the compiler is installed in usr/local/bin. but that 
doesn't matter, that's not what i need to locate. :)

Robert: no, i don't have homebrew. nor should users be expected 
to have it. the mac installer should install those support files.

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this is what it comes down to, installing this and getting it 
running should be painless. it's pretty close with the mac 
installer, but the mac installer needs to install those support 
files too. if it did, we'd be in good shape. i can add a bug or 
something to get that happen.