RFR: 8277868: Use Comparable.compare() instead of surrogate code

[Daniel Fuchs]

On Fri, 26 Nov 2021 12:46:59 GMT, Сергей Цыпанов <duke at openjdk.java.net> wrote:

> Instead of something like
> 
> long x;
> long y;
> return (x < y) ? -1 : ((x == y) ? 0 : 1);
> 
> we can use `return Long.compare(x, y);`
> 
> All replacements are done with IDE.

Changes to java.net look good. Please obtain approval from reviewers in the other areas before integrating.

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PR: https://git.openjdk.java.net/jdk/pull/6575