webos-image: Update layer pins for 2013-10-22

meta-webos-backports as of 2013-10-22 13:46:24 -0700

7f21642 devshell.bbclass: Import newer version from oe-core 1.5 dora

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

Change-Id: I2049f0a81b9959bea7e3a88046304b6e07904c2f
Reviewed-on: https://g2g.palm.com/3705
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>