Develop

Created logic to prevent database inserts when the poller detects that the cached counter value on an interface is zero (unless the current counter is also zero). 

Also added the following command line parameters:

-E <num>:   Allows the user to change the max errors per host before the host is ignored.

-C:    Causes the poller to insert the actual counter value (not just the diff) into a database column named currvalue