- acquire a connection handle before inspecting the busy table.   this improves specificity of multiwait events to wait for.
- acquire a connection handle before inspecting the busy table.
  this improves specificity of multiwait events to wait for.

- workaround a situation where releasing a sl_replrq wakes the
  multiwait up immediately.


git-svn-id: ae92b08b608af1c8cefa3e10d2325ea527204e07@9463 3eda493b-6a19-0410-b2e0-ec8ea4dd8fda

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable