review (XS) for 6921992: failure in verify scheduling after 6792161

[Tom Rodriguez]

http://cr.openjdk.java.net/~never/6921992

6921992: failure in verify scheduling after 6792161
Reviewed-by:

The fix for 6792161 created problems with the scheduler verification
logic so until I find a better for 6792161 I'm backing it out.  This
is just an anti-delta for the original fix.

src/share/vm/opto/ifg.cpp

The previous changeset was http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/0e14bd797dad