Request for reviews (XS): 6732732: CTW with EA: assert(n != 0L,"Bad immediate dominator info.")

[Vladimir Kozlov]

http://webrev.invokedynamic.info/kvn/6732732/index.html

Fixed 6732732: CTW with EA: assert(n != 0L,"Bad immediate dominator info.")

Problem:
During Connection Graph construction the edge to a call's return value
is missing if the returned object is unknown (not an argument and
not an allocation).

Solution:
Add missing edge as a globally escaping object.

Reviewed by:
Fix verified (y/n): y, failed test.

Other testing:
JPRT