Unfortunately to implenent multiconfig support in bitbake some APIs
had to change. This updates code in OE to match the changes in bitbake.
Its mostly periperhal changes around devtool/recipetool
[Will need a bitbake version requirement bump which I'll make when merging]
(From OE-Core rev: 041212fa37bb83acac5ce4ceb9b7b77ad172c5c3)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>