Compute Node Ruby for Bluegene/L

**NEW mpi_ruby is now working**

Compiling Ruby to run on the compute nodes of a Bluegene/L system is kind of a pain due to cross compilation and linking issues. Here is my first crack at it. Linked below is an optimized binary of Ruby-1.8.5 that will run on Bluegene/L:

bgl_ruby.1.8.5

I haven't tested it that much, but "Hello World" ran fine on all 2048 processors of our rack. You can run it as any other Ruby binary. On our system the syntax is along the lines of:

cqsub -q m32 -n32 -t1 bgl_ruby.1.8.5 hello.rb

I'm in the middle of making a compile script and some tutorials and I will post them as soon as they are finished.