RFR: 8285755: JDK-8285093 changed the default for --with-output-sync

[Maurizio Cimadamore]

On Wed, 27 Apr 2022 19:16:48 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> The make option '--output-sync recurse' can be useful in certain situations, especially when dealing with very verbose output from makefiles and you want to parse them after the fact. However, when running make interactively on the command line, it certainly gets in the way, as output from each sub make call is buffered until that make process terminates.
> 
> In [JDK-8285093](https://bugs.openjdk.java.net/browse/JDK-8285093), the configure logic for this configuration was changed and, probably by mistake, the default was changes to default "recurse" if available in the supplied GNU make. This is a regression for most users of the build system and needs to be changed back.

Looks good!

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Marked as reviewed by mcimadamore (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/8431