1. Fixes the bug reported by Robin Barker <rmb1@cise.npl.co.uk>

1. Fixes the bug  reported by  Robin Barker <rmb1@cise.npl.co.uk>
2. Fixes the bug  regarding return value of c-functions generated out
of perl subs. ( Just includes the patch I sent earlier)
3. Incorporates the other changes that need to be done to get CC.pm
use ISA search for packages and methods on the same lines as C.pm

Vishal would appreciate comments about B::Stackobj changes from
someone knowing that module well.

p4raw-id: //depot/perl@2461