other misc changes

Hi, Satish and others,

Just a reminder that some of my changes got lost during migration to
SourceForge: 

Fixing
misc typo in the spec:

(a) Moving terminationHandler from process level to scope level 

(b) removing compensationHandler from the process level

(c) renaming an attribute of "scope" from "variableAccessSerializable" to "isolated"

(d) removing "enableInstanceCompensation" attribute from XSD

After I figure out SourceForget setup and after I got the pen, I
re-apply the above changes.

Thanks!

Regards,

Alex Yiu