[jdk11u-dev] RFR: 8213922: fix ctw stand-alone build

[Aleksey Shipilev]

On Tue, 6 Jul 2021 08:15:09 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> This allows CTW bundle to be built again. Note that it is unclean backport, and it includes the part of "8214917: CTW testlibrary shouldn't ignore errors raised by the library itself" -- which is already quite messy, and would be inconvenient to work in through the regular process.
> 
> Additional testing: 
>  - [x] Standalone CTW build with JDK 11 now works
>  - [x] Sample standalone CTW run with JDK 11 works

@RealCLanger, are you good with picking up the additional hunk for the unclean backport?

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/101