now throw PHP Exception objects instead of giving a PHP error of
type E_ERROR.
This change shouldn't cause incompatibility issues, since you can't
set an error handler for E_ERROR, so previously PHP would just exit
which also happens for unhandled exceptions. The benefit is you can
now catch them if you want to.
Fixes SF#2545578 and SF#2955522.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12055 626c5289-ae23-0410-ae9c-e8d60b6d4f22
