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.

test/test-shell.sh

@@ -2,7 +2,15 @@
 # simple test harness for testing mgmt
 # NOTE: this will rm -rf /tmp/mgmt/
 
+echo running test-shell.sh
+set -o errexit
+set -o pipefail
+
+#ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && cd .. && pwd )"	# dir!
+ROOT=$(dirname "${BASH_SOURCE}")/..
+cd "${ROOT}"
 . test/util.sh
+cd - >/dev/null
 
 if [ "$1" == "--help" ] || [ "$1" == "-h" ]; then
 	echo -e "usage: ./"`basename $0`" [[--help] | <test>]"
@@ -10,10 +18,6 @@ if [ "$1" == "--help" ] || [ "$1" == "-h" ]; then
 	exit 1
 fi
 
-echo running test-shell.sh
-set -o errexit
-set -o pipefail
-
 LINE=$(printf '=%.0s' `seq -s ' ' $(tput cols)`)	# a terminal width string
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && cd .. && pwd )"	# dir!
 cd "$DIR" >/dev/null	# work from main mgmt directory