This cleans up the do_configure_qa code so that the exit status from
package_qa_handle_error is handled correctly.
It also converts package_qa_check_license to use our standard QA check
configuration interface through package_qa_handle_error rather than
a mix of return values, bb.fatal and bb.build.FuncFailed.
Due to the merging of multiple lines into one message, we need to
tweak a QA test to account for this.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>