pypy 2.3.1 attempt for cedar-14

builds/runtimes/pypy-2.3.1

+#!/usr/bin/env bash
+# Build Path: /app/.heroku/python/
+# Build Deps: libraries/sqlite
+
+OUT_PREFIX=$1
+
+echo "Building PyPy..."
+SOURCE_TARBALL='https://bitbucket.org/pypy/pypy/downloads/pypy-2.3.1-linux64.tar.bz2'
+curl -L $SOURCE_TARBALL | tar jx
+cp -R pypy-2.3.1-linux64/* $OUT_PREFIX
+
+ln $OUT_PREFIX/bin/pypy $OUT_PREFIX/bin/python