rename gst-launch --> gst-launch-1.0
replace old elements with new elements(ffmpegcolorspace -> videoconvert, ffenc_** -> avenc_**)
fix caps in examples
https://bugzilla.gnome.org/show_bug.cgi?id=759432
gst_zebra_stripe_transform_frame_ip_planarY
gst_zebra_stripe_transform_frame_ip_YUY2
gst_zebra_stripe_transform_frame_ip_AYUV
all above 3 functions do the same functionality except for offset and pixel stride.
Hence moving the functionality to a single funtion.
https://bugzilla.gnome.org/show_bug.cgi?id=735032