o Create dsp.so when building with DEVFS in -current.
o Pass variables to CONFIGURE_ENV in appropriate style.
o Add missing libdvdcss.* to pkg-plist (bumping PORTREVISION).
o post-patch hack is to select proper libs (-pthread/-lc_r).
o Check XFREE86_VERSION for xvideo.so in pkg-plist.
Submitted by: FUJISHIMA Satsuki <sf@FreeBSD.org>
