package.bbclass: enable the use of package_qa_handle_error

package.bbclass: enable the use of package_qa_handle_error

This will allow the reporting of these errors as either WARNINGs (default)
or ERRORs if installed_vs_shipped is added to the ERROR_QA of the policy
file (such as a <distro_name>.conf file.

V2: found the code I had intended to send instead of that other junk,
    was just not watching what I pushed on that one, sorry. (this is edit in
    no in the actual commit message)

(From OE-Core rev: 20d4205a4e408b6a99db392d4df458156113106a)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>