webrev to support remainder operation on longs

[Venkatachalam, Vasanth]

Hi,

I've uploaded a webrev which adds support to the HSAIL backend for the Java remainder operator (%) on longs.
Previously it was only supporting ints.

http://cr.openjdk.java.net/~tdeneau/webrev-remoplong.00/webrev/

Please review and when ready for check-in please commit the code under my name.

Notes;

*         This is a one line change to HSAILArithmetic.

*         I've added a test case (LongModTest) for this change

*         I've enhanced the test case for ints to use negative as well as positive values.

*         Floating point support for % will be added later. This needs to be scoped out.

Vasanth