Log Message:
Updated devel/visualvm to 2.1.3

Changes in 2.1.3

Features and Enhancements:

    Extended monitoring:
        GH-391: Add monitoring of network traffic
        GH-392: Visualise heap max and metaspace max values in graphs
    Heap viewer usability improvements:
        GH-397: [HeapViewer] display logical value of TruffleString
    Other improvements:
        GH-388: Allow BTrace plugin to run without --add-exports
        GH-390: Update generic JFR loader to version 8.1.0

Fixed Bugs:

    GH-372: UI proxy settings not used for remote host connections
    GH-382: Polyglot Sampler not compatible with latest TruffleRuby
    GH-383: Incorrect Self time reported when merging threads sample results
    GH-384: JFR Streaming: Do not take stacktraces for thread state events
    GH-389: The Socket IO tab does not group rows properly
    GH-394: ClassNotFoundException: org.netbeans.lib.uihandler.Decorations
    GH-395: Failed to create remote heap dump and save it

Unable to find any previous release notes as Oracle overwrite them
for each new relase, and have the github wiki set to private.  #yayoracle