Build gst-plugins-ugly only if BUILD_WITH_GST option provided.
Build gst-plugins-ugly only if BUILD_WITH_GST option provided.

Signed-off-by: Andrei Dolnikov <f10234ab582723aba4f89d0c8d855c03f4a13260@embeddedalley.com>

PPCDroid/external-gst-plugins-ugly,PPCDroid/external-gst-plugins-ugly,PPCDroid/external-gst-plugins-ugly