[jdk11u] RFR: JDK-8302000: A subtle race condition during jdk11u build

[Goetz Lindenmaier]

On Sun, 19 Feb 2023 02:49:48 GMT, Kumar Srinivasan <ksrini at openjdk.org> wrote:

> This is primarily a back-port of various fixes made in the development branch, please refer to the JBS issue for details.
> 
> Spp.java:  no longer uses stdin/stdout for IO. Now uses File IO, which is safer to use with makefile logging, whereby the use of macros can cause undesired and obscure side-effects with source generation using Spp.java.
> 
> Other changes are to the make logic itself to use the new -i and -o options.
> 
> [![OpenJDK GHA Sanity Checks](https://github.com/kusrinivasan/jdk11u/actions/workflows/main.yml/badge.svg?branch=topic-jdk-8302000)](https://github.com/kusrinivasan/jdk11u/actions/workflows/main.yml)

Please follwo the instructions!!! https://wiki.openjdk.org/display/JDKUpdates/How+to+contribute+or+backport+a+fix

I added [11u] to the JBS issue title.

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PR: https://git.openjdk.org/jdk11u/pull/68