RFR: 8033590: java.util.Comparator thenComparing has unnecessary type restriction

[Henry Jen]

Hi,

Please review a simple bug fix that loosen the generic type, the 
original proposed CCC for JDK-8009736 and webrev/specdiff has a 
discrepancy, I am not sure if another CCC is needed.

https://bugs.openjdk.java.net/browse/JDK-8033590
http://cr.openjdk.java.net/~henryjen/tl/8033590.0/webrev/

Cheers,
Henry