Adds support to the 'bitbake -e' command so that it can display the base
environment for a multiconfig. It was previously possible to get the
base environment for the main environment by running "bitbake -e", but
there was no support for getting the base environment for a multiconfig
without specifying a recipe. A user can now print the base environment
for the multiconfig "foo" by running:
$ bitbake -e multiconfig:foo
(Bitbake rev: 3d657af8a6120193d45d01968605b30075a56198)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>