allows the specification of the php.ini directory from within the Apache
configuration. If left unset, the default is to defer to the hard-coded
php paths. When set, the supplied path is made relative to Apache's
internal ServerRoot setting.
Example:
PHPINIDir "conf"
# PHP will now look in the ServerRoot/conf directory for the php.ini file
using apr_proc_create, it will seg fault, because PHP is using a NULL
child cleanup. To fix this, we have to use the special cleanup function,
apr_pool_cleanup_null.
This also fixes a compiler warning in the ap_log_error call.
TODO:
POST, cookies, "flushing", finalizing config framework (it works),
http auth, PHP Hooks (apache_sub_req is there).
Note that this code depends on some other commits which are pending.
