Rterra prebuilt

This has the terra libraries found at https://github.com/zdevito/terra/releases/tag/release-2015-08-03 .

• this won't work on OSX 10.9.5 (with R recompiled as per LuaJit instructions) because I haven't included the pre-build terra libraries
• but so far doesn't work on RHEL 5.6.
• but does work on Amazon EMR m1.medium instances and above!

rterra with built in libraries (no need to compile)

This has the terra libraries found at https://github.com/zdevito/terra/releases/tag/release-2015-03-12.

• It works on OSX 10.9.5,
• but so far doesn't work on RHEL 6.6.
• but does work on Amazon EMR m1.medium instances