Curbing Session History growth

[Radha Kulkarni]

Session History currently grows unbounded and has occupied the #2 slot 
on the bloat chart. http://bugzilla.mozilla.org/show_bug.cgi?id=62651 
lists some of the ideas that have been thrown at the table. For 6.5, 
saving a limited (but configurable) number of entries in SH seems 
attractive.

I'm not sure how affects the embedding world. Any ideas or issues with 
limiting the # of linear entries in SH?

Thanks,
Radha