ca-certificates: add recipe (version 20130610)

We need this for certain nativesdk recipes, as we can't rely on the
certificate path or bundle path being the same across distros, and it's useful
in many cases on the target as well.

This is based on the 20130119 recipe from meta-oe, with the following changes:

- use the debian git repository to avoid vanishing sources
- obey our target paths
- default to a sysroot relative to the script location (make relocatable)
- define SUMMARY
- don't inherit autotools, this isn't an autotools package
- add MPL-2.0 to LICENSE, as that's the license of the certdata
- install the script man page
- use a native rather than cross recipe, as it's not bound in any way to the
  target system
- add nativesdk to bbclassextend, for use in SDKs

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
nativesdk-ca-certificates: prepopulate ca-certificates.crt

As postinsts aren't run for nativesdk packages when populating an SDK, we need
to prepopulate up-front.

Signed-off-by: Christopher Larson <chris_larson@mentor.com>