This introduces the 4.21 recipes. Along with the main Xen and Xen-tools
updates, we also have the following:
- two compile patches for xen and xen-tools that fix issues with the
way yajl is pickup in the yocto environment
- packaging of the new libxenmanage libraries
- fixup of the watchdog system units
- updates to the test packaging (new directories)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
