[code-reflection] Integrated: bld script and bldr tools cleanup

[Gary Frost]

On Sun, 27 Oct 2024 16:39:34 GMT, Gary Frost <gfrost at openjdk.org> wrote:

> Some `bld` script maintenance and some `bldr/../Bldr.java` features to allow `jextract` and `java` execution from scripts
> 
> Added more checks to `hatrun.bash`
> 
> Added java launcher version of `hatrun.bash` called `hatrun` (chmod +x)

Whitespace removal, also included `bldr/.../Bldr.java` in sanity check.

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PR Comment: https://git.openjdk.org/babylon/pull/266#issuecomment-2440094427