Imported the register_globals hack from REL1_2. Also starting work on

Imported the register_globals hack from REL1_2. Also starting work on
elimination of the use of import_request_variables (which gives us all
the insecurity of register_globals). Uncomment the define of DEBUG_GLOBALS
in index.php to turn on extra error reporting and trace down use of
uninitialized variables and nassssty globals.

Also rearranged the magic_quotes fixing, may not yet cover everything...