[OE-core] [PATCH 0/7] wic:allow wic compile as an individual package

[Jiang Lu]

This patch set intend to allow wic compile as an individual package, then it can run both on host & target side.

On host, it invoke by image_type_wic.bbclass to as a native tool to generate wic image.

Patch 1-4 make wic compile as a native tool.

On trarget, it parse wks file, and use current rootfs & /boot folder to generated a new wic image on target.

Patch 5-6 fix a few minor issue on target. 

The patch is validate with mkefidisk.wks from oe-core layer on intel x86 platform.

Assume /dev/sda2 is root device, then with following command, use could generate a new wic image

	$mount /dev/sda2 /tmp/sda
	$wic create /root/mkefidisk.wks  -k /boot -r /tmp/sda -o /tmp/ 

The generated image is under /tmp with name mkefidisk-xxx-sda.direct. Then user may dump this file into another booting deivce.


Thanks
Jiang Lu