* src/Request.h: Use AuthResolver to get authentication
information.
* src/main.cc: Made RequestFactory a singleton object. Netrc is
now
set to RequestFactory object.
* src/AuthConfigItem.h, src/AuthConfigItem.cc: Removed.
* src/AuthConfig.h, src/AuthConfig.cc: Rewritten.
* src/TrackerWatcherComand.cc: Use RequestFactorySingletonHolder
to
create Request object.