Add support for AreaFix -R, -L, and -Q options in subject of AreaMgr requests

(these options follow the password by one or more spaces)

I implemented these based on AreaFix v1.10 User's Guide, at Ragnarok's
suggestion/request. I didn't test them, so looking forward to getting some
test results.

The -L and -Q options are functionally identically to the %LIST and %QUERY
AreaManager commands, while -R ads a little efficiency by combining +areatag
(add) and %RESCAN <areatag> requests in a single command.