-Replace the use of Z_Malloc in W_AddFile with new/delete so that W_AddFile is not reliant on zone memory being initialized.

git-svn-id: http://odamex.net/svn/root/trunk@4326 b0bcef46-2027-0410-bd56-ab726e9a1d04
-Use call_terms and exit instead of I_FatalError to quit the client application when using -timedemo.

git-svn-id: http://odamex.net/svn/root/trunk@4328 b0bcef46-2027-0410-bd56-ab726e9a1d04