bitbake-layers: show-cross-depends: add option to ignore a layer

By default, show-cross-depends shows dependencies on OE-Core (i.e.
"meta") which is not particularly useful. Add an option to allow you to
hide those. For example, to hide all dependencies on OE-Core:

  bitbake-layers show-cross-depends -i meta

Multiple layers can be specified by using commas as separators (no
spaces).

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bitbake-layers: show-cross-depends: ignore global inherits

It's not particularly useful to show globally inherited classes here
since they do not normally represent a dependency.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bitbake-layers: show-cross-depends: ignore self-satisfied RDEPENDS

Overlayed recipes caused this to show false positives because the
overlaying version appeared to be satisfying the overlayed version's
RDEPENDS; but you'd never be building both at the same time.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bitbake-layers: show-cross-depends: add support for RRECOMMENDS

RRECOMMENDS must be satisfied at build time, and these could cross layer
boundaries, so report these if they exist.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
- fixed missing proto param for hg checkout with user and pw

Signed-off-by: Volker Vogelhuber <v.vogelhuber@digitalendoscopy.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>