Remove call to depmod in busybox

The version of depmod in busybox does not work if two versions of
the same kernel version are available, as search paths are not
honoured correctly.  However, we don't need to actually call
depmod as it's done during image building anyway.

Change-Id: Idd3cd5854e7c86e7ca1f2b0e50758d7db79ab6e7
Co-Author: matthew.gilliard@hp.com
Closes-bug: #1302856
Standardise manifest creation and retrieval

* Create a standard element to copy manifests out of the image and
  into the build area.
* Ensure all current manifests are copied into a standard manifests
  directory

Change-Id: I37eff5a13a14564e1adc33eb4f0144d571267617
Merge "Standardise manifest creation and retrieval"
Merge "Remove call to depmod in busybox"