create a unified call to handle read and write rpc's.  this new io  handler can process unaligned read and write requests, up to 1MB in  size.  Further, the requested 1MB region does not have to fit into a  single sliver though this version of code requires that it does have  to fit into 2 slivers.  
create a unified call to handle read and write rpc's.  this new io 
handler can process unaligned read and write requests, up to 1MB in 
size.  Further, the requested 1MB region does not have to fit into a 
single sliver though this version of code requires that it does have 
to fit into 2 slivers.  

this update will break ric.c for now..



git-svn-id: ae92b08b608af1c8cefa3e10d2325ea527204e07@7332 3eda493b-6a19-0410-b2e0-ec8ea4dd8fda

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable