Revert "Finished AppDomain changes."

This reverts commit 8b9816ed623f376026f17dd99d3310ddcce3fae5.
Revert "Savepoint before continuing AppDomain safe handling"

This reverts commit 37647aecf10bab64c1f6511410a14ecd9c1ec2d1.
Revert "Added AppDomainSafe.h"

This reverts commit c66d3fe0d9fd4cef971323b45c010bd0c58b5bc3.
Revert "Starting to redefine safe delete macro."

This reverts commit 24606a0ce4514be48548d1c92d7b8098d62800d3.
Revert app domain changes