[cctbxbb] Problems compiling cctbx on OS X (10.8.0)

[Jeffrey Van Voorst]

Apple has been "messing around" with the Xcode and the OS to prefer 
CLang over gcc (at least that is what I have inferred).  It could be 
that on Mac OS X 10.8 that scons chooses a different compiler, etc. than 
on Mac OS X 10.6.8 (where cctbx compiles fine).

Hopefully scons has a method to print the toolchain or config to see 
what differs from previous versions of Mac OS X (e.g. 10.6.8 and 10.8.0) 
Xcode 3.* or Xcode 4.*?

--Jeff