ACCUMULO-1334 add disk usage to the API

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1478068 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1334 add disk usage to the API

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1478069 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1321 - Introducing VFS with a finally method to close the filesystem. Improvement from the last hack, still not 100% content with it though



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ACCUMULO-1334 add apache header

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ACCUMULO-1321 Created new file vfs file replicator avoid collisions, added classloader unit test that uses two jars, added code to delete replicated files and close vfs instances

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ACCUMULO-1334 make du test more forgiving of small changes

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1478481 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1334 make du test more forgiving of small changes

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1478483 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1334 patching in Corey Nolet's updates to unify large number formatting for humans

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1478484 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1334 merging 1.5 to trunk

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