CI with Travis and loads of portability fixes

ci-scripts/install-deps.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+set -ex
+mkdir -p local/build
+for d in nlopt minuit hdf5; do
+  if [ ! -e local/.built.${d} ]; then
+    ./install-${d}.sh
+  fi
+done
+./install-latcore.sh