Going back in OE-Core recipe upgrade history, we kept GPLv2 and GPLv3
versions of a number of recipes around, so this is the source of quite a
few situations where we had multiple versions of recipes with the same
recipe name around. Add means of grouping upgrades by license so that we
can keep these versions separate in the upgrade history instead of
detecting lots of apparent upgrades and downgrades if they are
intermingled.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
