[Issue #140] Use "/usr/bin/env bash" instead of /bin/sh.

diff --git a/configure b/configure
index 4ed7d87c81e656383caf8345c3a40d80f6528ce2..5f6c31387189b90cc6f3e7b4deeb9b6fc6acfc05 100755 (executable)
--- a/configure
+++ b/configure
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 # configure script for zlib.
 #
 # Normally configure builds both a static and a shared library.