Commit the script to setup the environment

Commit setup_environment which sets up the PATH and LD_LIBRARY_PATH to
find the toolchain (modified gcc) and libraries (openmp).

pipepar/setup_environment

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -u
+
+export PATH=${PATH##*:}:${PATH%:*}
+
+ompLibDir=${PATH%%:*}
+ompLibDir=${ompLibDir%/bin}/lib64
+export LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+${LD_LIBRARY_PATH}:}$ompLibDir
+
+zsh