MC-JIT Streamer 1/3

I was delayed creating the smaller patches, but finally I had some time to put the first set together. There are three small patches, the first two are classes the MCJITStreamer uses, and the last patch is the MCJITStreamer class itself.

- Jan

0021_mcjit_rawostream.patch (5.14 KB)

Hi Jan,

Just a random comment, the indentation in mem_raw_ostream::write_impl
and mem_raw_ostream::current_pos should also be 2 spaces instead of 4!