[9] RFR of 8065556: (bf) Buffer.position and other methods should include detail in IAE

[Brian Burkhalter]

Please review at your convenience.

Issue:	https://bugs.openjdk.java.net/browse/JDK-8065556
Patch:	http://cr.openjdk.java.net/~bpb/8065556/webrev.00/

My doubts concern the changes to the test portion, viz.:

1) Is the style sufficiently consistent?
2) I have not added a “@bug” tag like we normally would because all the affected test files are generated from a template which contains no such tag. (Should one perhaps be added to Basic.java with no other changes to that file?).

Thanks,

Brian