Commit [r315] Maximize Restore History

This apparently helps work a little on IronPython2.0.

Patch by: Shigeaki Matsumura

Additional comments (from tracker feature request 2806438):

> It seems like working, but __del__ methods are not properly called
> because of the GC mechanism on CLI. Anyway, I hope to use it on
> IronPython.

mhagger 2010-12-12

changed /trunk/
/trunk/ Diff Switch to side-by-side view