threads working ...
Thread.wait
notes etc
some work on concurrency
remove copy of vm from thread
revert changes
Merge branch 'master' of https://github.com/clever-lang/clever
stuff on concurrency
Merge branch 'master' of https://github.com/clever-lang/clever

Conflicts:
	modules/std/concurrent/thread.cc
concurrency stuff
woops
Merge branch 'master' of https://github.com/clever-lang/clever

Conflicts:
	core/vm.cc
	core/vm.h
concurrent stuff
first test for std.concurrent
update
threads inside threads test
Merge pull request #268 from krakjoe/master

merge changes to std.concurrent