Update third-party libraries to their latest versions.

Libraries updated:
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xmlrpc-* (3.1 to 3.1.3)
commons-logging (1.1 to 1.1.1)
WinRegistry (4.4 to 4.5)
jpathwatch (0.94 to 0.95)
xstream (1.2.1 to 1.4.4)
JFlex (to 1.4.3)
JGraph (to 5.8.3.1)