env is used as you'd expect now.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=60859
Reviewed-by: Chengwei Yang <chengwei.yang@intel.com>
*
* @param sitter_p return location for babysitter or #NULL
* @param argv the executable and arguments
- * @param env the environment (not used on unix yet)
+ * @param env the environment, or #NULL to copy the parent's
* @param child_setup function to call in child pre-exec()
* @param user_data user data for setup function
* @param error error object to be filled in if function fails