Separate poll commands in classes with static functions

[spaulaus]

On 2015-10-02 16:00:22 @ksmith0 created this issue by saying:
Instead of maintaining an ever increasingly complicated list of commands it may be easier to create a class which is a friend of Poll so that access to private and protected members is allowed. Each class then inherits from an abstract class with a static functions of the type static bool PollCommand::ExecuteCommand(Poll *) = 0.

The tab complete list could then be made upon the registration of each command.

The PollCommand class could also have signatures for abstract help routines.
static bool PollComand::Help(bool shortHelp) = 0.

[spaulaus]

On 2015-10-02 20:44:54 @ksmith0 said:
Friendship is not inherited so this will not work as nicely as I thought.