Make Math.round consistent on arm64.

OpenJDK seems to have a different rounding implementation than
libcore. Temporarily disable the intrinsic.

Test that fails:
Assert.assertEquals(StrictMath.round(0.49999999999999994d), 1l);
Assert.assertEquals(Math.round(0.49999999999999994d), 1l);

bug:26327751

Change-Id: Iad2fb847e4a553b8c1f5031f772c81e7e4db9f4c
2 files changed