RFR: remove blanks in output like "int x ( int y)"

[Athijegannathan Sundararajan]

On Thu, 6 Oct 2022 17:59:21 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> Unless the spaces around "(" is a special style, this patch can clean (at least some of) them up.

Note that the fix is directed to master branch which is for jdk 19. If you want the fix for jextract that works with Panama jdk, then "panama" is the branch

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PR: https://git.openjdk.org/jextract/pull/82