bitbake.conf: We only care about the absolute value of baselib
The value of baselib can be constructed in several different ways
and from a sstate perspective we don't care how it was made up,
we only care what the final value is. This uses the new functionality
in bitbake to ensure we only include the value of baselib and not
any intermediate dependencies.
[YOCTO #1583]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
