While the metadata can and should rely on bb always being available, this
needn't necessarily be the case for imported python modules.
(From OE-Core rev: a521835701c07f5786acd663fb4fb394e93eba91)
Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Most notable change is the move to creating symlinks to patches in the metadata
tree rather than copying them.
Signed-off-by: Joshua Lock <josh@linux.intel.com>