New RAW bytecode files for a couple spec benchmarks

It came up in class today that people might have use for unoptimized
versions of the SPEC benchmark files. As such, I uploaded these new
bytecode files, which are the largest of the spec benchmarks:

http://llvm.cs.uiuc.edu/LLVMPrograms/SPEC/

  254.gap.RAW.bc
  255.vortex.RAW.bc
  300.twolf.RAW.bc

In these bytecode files, LICM and GCSE eliminate tens of thousands of
instructions. They should be a good testcase for PRE or whatever.

-Chris