Email :: popLogin - Login to POP mail server
The function provides a connection with a POP mail server. Before login, host and server have to be set.
Return value:  Success ( bool  )
The value is true when the function was executed successfully. Otherwise the value is set to false.
Implementation details
bool 
Email  :: popLogin ( odaba::String &cUserName, odaba::String &cPassword )
Usually, login requires user name (cUserName) and password (cPassword).
- cUserName - - internal feature (not documented)
- cPassword - - internal feature (not documented)

