AWLF unit test failure with rotate

Bugzilla Link	1036
Created on	Nov 18, 2012 18:07
Version	svn
OS	Linux
Architecture	PC
Attachments	crud3.sac

Extended Description

Created an attachment (id=939)
source code to reproduce fault
AWLF was working, but stopped working some time around/after July, on 
some cases where (I think) the consumer WL is using a subtraction
on its index vector. The immediate failure is inability to compute 
the predicate WLINTERSECTION1PART.
sac2c -V
sac2c v1.00-beta (Haggis And Apple)
 developer rev 18028 linux-gnu_x86_64
 (Thu Nov 15 16:04:14 EST 2012 by sac)
sac2c crud3.sac -doawlf -nowlf -v1 -bopt:uglf  >crud