FastList failed junit test occasionally due to iterator still finding hasNext() when all nodes are supposed to have been removed.  Used synchronization on each node to add atomicity to node removal operations, no more test failures were experienced.
FastList failed junit test occasionally due to iterator still finding hasNext() when all nodes are supposed to have been removed.  Used synchronization on each node to add atomicity to node removal operations, no more test failures were experienced.

git-svn-id: e208463f0da49ce01d17e17a21a9293a7ba6b26a@1481475 13f79535-47bb-0310-9956-ffa450edef68

pfirmstone/JGDMS,pfirmstone/river-internet,pfirmstone/JGDMS,pfirmstone/JGDMS,pfirmstone/JGDMS,pfirmstone/river-internet,pfirmstone/river-internet