- Changed dl() to be disabled by default. Enabled only when explicitly
registered by the SAPI layer. Enabled only with CLI, CGI and EMBED. (Dmitry)
-- Changed "instanceof" and "catch" operators, is_a() and is_subclass_of()
- functions to not call __autoload(). (Dmitry)
- Changed opendir/dir/scandir to use default context
when no context argument is passed. (Sara)
- Changed open_basedir to allow tightening in runtime contexts. (Sara)