Background hash (was "asynch") now uses queue & fixed-size thread pool  (org.lockss.hashcus.threadPool.size, default 1), has Delete, Cancel  buttons.
Background hash (was "asynch") now uses queue & fixed-size thread pool
 (org.lockss.hashcus.threadPool.size, default 1), has Delete, Cancel
 buttons.


git-svn-id: 293778eaa97c8c94097d610b1bd5133a8f478f36@27702 4f837ed2-42f5-46e7-a7a5-fa17313484d4

lockss/lockss-daemon,lockss/lockss-daemon,edina/lockss-daemon,edina/lockss-daemon,edina/lockss-daemon,edina/lockss-daemon,lockss/lockss-daemon,lockss/lockss-daemon,edina/lockss-daemon,lockss/lockss-daemon,lockss/lockss-daemon,edina/lockss-daemon,edina/lockss-daemon,lockss/lockss-daemon