Updated notes for last week online

[Subbarao Kambhampati <rao@asu.edu>]

I updated the notes for the last week (both classes) to better reflect what 
we discussed in the class.

Check them out.

Rao

ps: for those interested in "plan explanation" issues (that came up in 
connection with Kanna Rajan talk), you may want to take a look at
     http://rakaposhi.eas.asu.edu/rao-cbr-90.pdf