devtool: add: warn if modified recipe found in attic directory
If a recipe generated by "devtool add" has been modified since then when
you run "devtool reset", it will be moved into the "attic" subdirectory
of the workspace in case those modifications need to be preserved. It
seems natural that if those modifications were worth preserving we
should warn the user if such a file exists when they run "devtool add"
to create the same recipe again, so they can pick up where they left off
if they want to.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
