llvm dev - Jan 2016 - [CMake] [OS X] Allow custom CMAKE_INSTALL_NAME_DIR and CMAKE_INSTALL_RPATH

Hello all! Quick question about the OS X build process.

Would be beneficial to allow the user compiling LLVM to specify the install
name/rpath for dylibs? The default settings work, but I think it would be nice
if users could specify a single location for libs and not have to worry about ld
flags.

Thoughts?

-Alex