Currently wildcard matches end up working by FILESDIR being defined
in the metadata to a default of "." in FILESPATH which is hacky at best.
This patch adds the behaviour into the fetcher so its at least slightly
more explicit.
(Bitbake rev: 07b5f84133ac79aac4e939ea5f24390ad7f940a5)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>