Corrected the getChainedLogLevel() signature to match the ancestor class.
Corrected the getChainedLogLevel() signature to match the ancestor class.

hunter-packages/log4cplus,csuideal/log4cplus,hunter-packages/log4cplus,hunter-packages/log4cplus,ccpaging/log4cplus,csuideal/log4cplus,csuideal/log4cplus,ccpaging/log4cplus,csuideal/log4cplus,hunter-packages/log4cplus,ccpaging/log4cplus,ccpaging/log4cplus