pass --moar-options(s) to NQP's Configure

This makes setting --moar-option(s) in rakudo's Configure actually have
those options passed to MoarVM's Configure
Get latest NQP for code-gen fixes, better Moar.
Use new API for grabbing a code object.

This handles lazily deserializing it if needed.
Prevent using Bool as a Matcher in grep c.s.

As per S29:126
Merge pull request #300 from carbin/some-of-us-have-to-set-the-os-option

pass --moar-options(s) to NQP's Configure
Add Proc::Async for Moar. Bumps NQP_REVISION.

Enables asynchronous spawning of a process, tapping of stdout or
stderr (or both) by bytes or chars, and provides a promise for
process completion that, if kept, gives a Proc::Status. Todo is
killing the process and async writes to stdin of that process.
Mention the use of --moar-option=--enable-jit
Proper --moar-option, spotted by japhb++