webos-image: Update layer pins for 2014-04-30

meta-webos as of 2014-04-29 13:02:25 -0700

26d2092 webos-image: librolegen=20-r4

Open-webOS-DCO-1.0-Signed-off-by: Susan Montooth <susan.montooth@lge.com>

Change-Id: Ic5ccc0e6d32ec8f4be719e2b76447b19a155e0ed
Reviewed-on: https://g2g.palm.com/5506
Reviewed-by: DCO Verification
Build: Susan Montooth <susan.montooth@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>