Allow mercurial fetcher to follow tip
There are occasions when developing when I want a package always to
grab the latest copy of a package. Witht eh CVS fetcher you can do
this by setting the `date' tag to `now'. This patch adds similar
functionality to the mercurial fetcher: if the revision to fetch is
`tip' then always grab from the server, and don't use the cached
tarball.
Oh, and I fixed a typo in the Class comment.
(Bitbake rev:
01b85608d8a37f8af66dfd80133e950120679079)
Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au>
Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
