Update autoop.cpp

Added support for multiple comma separated hostmasks per user. Added new commands to add and remove hostmasks. Kept the table column names the same so as to not break back-compatability.

I have tested adding and removing several hostmasks for multiple users and checked that it does auto-op them correctly, looks good!
Ok. Here the user is deleted. What was the key? It looks like you added that to wrong line, when the user is NOT deleted.