gstreamer1: Upgraded to 1.4.2.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
gst1-plugins-base: Upgraded to 1.4.2.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
gst1-plugins-good: Upgraded to 1.4.2.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>