pfPorts/pecl-APC: Sync with FreeBSD r311233 (where meaningful)

Sync the port where possible but omit sucking in APC 3.1.14 since it was broken and
had to be reverted in the port. Instead of that, only suck in smaller changes from
the upstream port.

From r311233
Author: sunpoet <sunpoet@FreeBSD.org>
Date:   Wed Jan 30 16:24:11 2013 +0000

    - Update to 3.1.14 (pfSense: actually we omit that change)
    - Add DOCS option
    - Cleanup Makefile header

    Changes:    http://pecl.php.net/package-changelog.php?package=APC