Run the tests in parallel

Cause the time needed to run the testsuite to drop from ~4mins to ~40s

mk/run_test.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -u
+
+red=""
+green=""
+yellow=""
+normal=""
+
+post_run_msg="ran test $1..."
+if [ -t 1 ]; then
+    red=""
+    green=""
+    yellow=""
+    normal=""
+fi
+(cd $(dirname $1) && env ${TESTS_ENVIRONMENT} init.sh 2>/dev/null > /dev/null)
+log="$(cd $(dirname $1) && env ${TESTS_ENVIRONMENT} $(basename $1) 2>&1)"
+status=$?
+if [ $status -eq 0 ]; then
+  echo "$post_run_msg [${green}PASS$normal]"
+elif [ $status -eq 99 ]; then
+  echo "$post_run_msg [${yellow}SKIP$normal]"
+else
+  echo "$post_run_msg [${red}FAIL$normal]"
+  echo "$log" | sed 's/^/    /'
+  exit "$status"
+fi