CI with Travis and loads of portability fixes

ci-scripts/install-nlopt.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+NAME='nlopt-2.4.2'
+
+set -ex
+INITDIR=`pwd`
+cd local/build
+wget http://ab-initio.mit.edu/nlopt/${NAME}.tar.gz
+tar -xzvf ${NAME}.tar.gz
+mkdir -p ${NAME}/build
+cd ${NAME}/build
+../configure --prefix=${INITDIR}/local --with-cxx --without-guile --without-python --without-octave --without-matlab --with-pic
+make -j4 
+make install
+cd ${INITDIR}/local
+touch .built.nlopt
+cd ${INITDIR}