Fix mode loading for temporary buffers
Fix bug #3598661 - Don't allow negative values in the general option pane.
Update doc/CHANGES.txt
TaskManager: Refactor io Task: Add missing IoTask class.
TaskManager: Refactor IoTask
HyperSearch: Make search interruptible even when in VFS.listFiles()
Make SearchMatcher interrupttible:
Java is very backward compatible! I better use a real JDK6...