Remove shared help

Remove the shared help from OSSEC programs. This is in reference to #207. Now each program has it's own help that should hopefully be accurate to what the program is actually capable of doing.

There are still a lot of help fixes I'd like to make but I feel like this is a good stopping point for now for two reasons. First, it gives @ossec a chance to review and comment. Second, the other changes I would like to make can/should be done in much smaller chunks.

If this does get accepted a look at the documentation of the programs should happen at some point as the options have likely changed for some.

http://ossec-docs.readthedocs.org/en/latest/programs/