Fix merging bug where downstream items somtimes got ignored if they appear after an upstream-only item. Also, reduce the severity of the validation error if a tech-domain is not recognised on a non-Foundation package.
A new --query command-line option allows other tools to easily read raptor's
configuration data without having to understand exactly how raptor config
files work.
For example, all the valid build aliases which can be used to build with
the -c option can be obtained using:
sbs --query=aliases
All the known product variants can be obtained using:
sbs --query=products
And the details of a particular configuration can be found using:
sbs --query=config[armv5_urel.n8]