Review request for 8015357: a = []; a[0x7fffffff]=1; a.sort()[0] should evaluate to 1 instead of undefined

[A. Sundararajan]

Please review http://cr.openjdk.java.net/~sundar/8015357/
After the recent Array int/long consistency fixes, this issue is no 
longer reproduced. Adding a regression test for future.

-Sundar