[oe] patch: shasum vs. sha256sum

[Holger Freyther]

Hi,

I think this issue is almost resolved:

	-OE now has a oe_sha256sum binary which is used to verify checksums
	-quilt-native and all other packages depend on this version
	-oe-shasum has no dependencies itself
	-This works with BitBake-1.6
	-Currently it works with BitBake-1.8 but quilt-native fetches before  
the utility is staged and this needs fixing. This will break once  
auto* or quilt* start to use md5/sha sums. We need to look into  
bitbake-1.8 why this dependency is not correctly handled.



kind regards
	holger