lib/oe/qa,insane: Move extra error handling functions to library

Extract package_qa_write_error, package_qa_handle_error and
package_qa_add_message functions from insane.bbclass to lib/oe/qa.py and
drop the package_qa_ prefixes.

Update various bbclasses to use the new functions. No import is required
since base.bbclass puts oe.qa in OE_IMPORTS.

Stop requiring callers to manually track whether a fatal error has been
encountered via a "sane" flag. Instead replace the QA_SANE variable with
QA_ERRORS_FOUND and call oe.qa.exit_if_errors or
oe.qa.exit_with_message_if_errors at the end of each task.

Inspired by discussion resulting from
https://lists.openembedded.org/g/openembedded-core/message/156793 and
https://lists.openembedded.org/g/openembedded-core/message/156900

(From OE-Core rev: f0ad152ef4cc15c042bc9eeefb6af096d054b220)

Signed-off-by: Mike Crowe <mac@mcrowe.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/multilib.bbclass

@@ -210,7 +210,7 @@ python do_package_qa_multilib() {
         if len(candidates) > 0:
             msg = "%s package %s - suspicious values '%s' in %s" \
                    % (d.getVar('PN'), pkg, ' '.join(candidates), var)
-            package_qa_handle_error("multilib", msg, d)
+            oe.qa.handle_error("multilib", msg, d)
 
     ml = d.getVar('MLPREFIX')
     if not ml:
@@ -228,4 +228,5 @@ python do_package_qa_multilib() {
         check_mlprefix(pkg, 'RSUGGESTS', ml)
         check_mlprefix(pkg, 'RREPLACES', ml)
         check_mlprefix(pkg, 'RCONFLICTS', ml)
+    oe.qa.exit_if_errors(d)
 }