Fix SIGSEGV when filter file cannot be opened. Fix SIGSEGV when filter file cannot be opened. Add some comments on the readfilter() state machine.
Fix SIGSEGV when filter file cannot be opened.
Fix SIGSEGV when filter file cannot be opened.
Add some comments on the readfilter() state machine.

BackupTheBerlios/leafnode,BackupTheBerlios/leafnode,BackupTheBerlios/leafnode,BackupTheBerlios/leafnode