RFR: 8256538: Fix annoying awk warning in configure for java versions

Wed Nov 18 13:38:07 UTC 2020

On Wed, 18 Nov 2020 09:47:58 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> The change from grep to awk in JDK-8244248 and further bug fixed in JDK-8244756 still has invalid syntax. This causes some awk (most notably gawk, the most commonly used) to complain:
> 
> gawk: cmd. line:1: warning: regexp escape sequence `"' is not a known regexp operator
> 
> This is annoying and should be fixed.

Marked as reviewed by erikj (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/1285