RFR: 8346719: Add relaunchers to the static JDK image for missing executables [v9]

[Alan Bateman]

On Thu, 11 Sep 2025 12:13:04 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> In the static JDK image, a single humongous java executable is generated, and no other launcher, such as javac. This makes it impossible to run our jtreg tests, which assume these are present.
>> 
>> The solution is fortunately simply: we just need to add a bunch of trivial launchers, which are thin wrappers that execute the main java binary, with the proper arguments. This will result in the same behavior as the normal dynamic launchers, only that we will need to take the detour of launching another process instead of calling directly into the JLI library.
>
> Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove debug code

src/java.base/windows/native/launcher/relauncher.c line 40:

> 38: static char* launcher_args[] = LAUNCHER_ARGS;
> 39: 
> 40: char* quote_argument(char* arg) {

@RogerRiggs Would you mind scanning the quote_argument in the Windows launcher? You've had to deal with this in the process code and I think good to get another set of eyes.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24380#discussion_r2349554917