CI with Travis and loads of portability fixes

ci-scripts/install-latan.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+if (( $# != 2 )); then
+  echo "usage: `basename $0` <prefix> {osx|linux}" 1>&2
+  exit 1
+fi
+LATAN_PREFIX=$1
+OS=$2
+
+set -ex
+PREFIX=`pwd`/local
+./install-deps.sh
+cd ..
+./bootstrap.sh
+mkdir -p build
+cd build
+if [[ "$OS" == "osx" ]]; then EXTRA_FLAGS='--with-gsl=/usr/local'; fi
+../configure --prefix=$LATAN_PREFIX --with-minuit=$PREFIX --with-nlopt=$PREFIX --with-latcore=$PREFIX --with-hdf5=$PREFIX $EXTRA_FLAGS
+make -j4
+make install