RFR: 8353580: libjpeg is not found if not installed in system directories

[Erik Joelsson]

On Thu, 3 Apr 2025 07:59:26 GMT, snake66 <duke at openjdk.org> wrote:

> The autoconf scrips fail to find libjpeg on systems where it's not installed in the default system include and library directories. It should check for the pkgconfig in these cases.
> 
> This work is sponsored by The FreeBSD Foundation

Marked as reviewed by erikj (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24403#pullrequestreview-2741949342