CRM_Core_TemporaryErrorScope

This is an evil, evil work-around for CRM-11043. It is used to temporarily change the error-handling behavior and then automatically restore it -- that protocol is an improvement over the current protocol (in which random bits of code will change the global error handler setting and then forget to change it back). This class and all references to it should be removed in 4.3/4.4 (when we adopt exception-based error handling).

To ensure that new errors arising during execution of the current function are immediately fatal, use:

To ensure that they throw exceptions, use: