Moved lots of code into a subproject

I think stuff like zip and github installing belong in a repository
dedicated to installing from github. Moved these libraries into a new
project called grin (Github Release INstaller)
Fixed installer
Fixed pullEvent; Added pullRaw and queue.
Moved x2xType functions to runtime for global use
Added EventLoop and Events for regular CC events

Most of them anyway. HTTP and Rednet should be handled specially.
Fixes #33
Updated grin
Merged master.