RFR: 8284891: Fix typos in build system files

Thu Apr 14 16:29:40 UTC 2022

On Thu, 14 Apr 2022 16:05:48 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> I ran `codespell` on the `make` directory, and accepted those changes where it indeed discovered real typos.
> 
> (Due to false positives this can unfortunately not be run automatically) 
> 
> Most of the fixes are in comments. A few are in messages aimed at the user.

Marked as reviewed by erikj (Reviewer).

-------------

PR: https://git.openjdk.java.net/jdk/pull/8246