Getter methods in TLS handlers should be called on debug mode only.

The SSLSocket methods getEnabledProtocols() and getEnabledCipherSuites() used by
the TLSClientHandler and the TLSServerHandler classes should be only called when
debugging is turned on.

This fix should improve performance and let customers use the TLS feature when
running on JDK 1.3 (with logging turned off).