lang: Initial implementation of the mgmt language

This is an initial implementation of the mgmt language. It is a
declarative (immutable) functional, reactive, domain specific
programming language. It is intended to be a language that is:

* safe
* powerful
* easy to reason about

With these properties, we hope this language, and the mgmt engine will
allow you to model the real-time systems that you'd like to automate.

This also includes a number of other associated changes. Sorry for the
large size of this patch.

misc/delta-cpu.sh

@@ -7,7 +7,7 @@ count=1		# initial count
 factor=3
 function output() {
 count=$1	# arg!
-cat << EOF > ~/code/mgmt/examples/virt4.yaml
+cat << EOF > ~/code/mgmt/examples/yaml/virt4.yaml
 ---
 graph: mygraph
 resources: