git: openjdk/jdk11u-ri: 8210008: custom extension for make/SourceRevision.gmk

[Erik Joelsson]

Changeset: ce731179
Author:    Erik Joelsson <erikj at openjdk.org>
Date:      2023-02-28 19:04:37 +0000
URL:       https://git.openjdk.org/jdk11u-ri/commit/ce7311795d6e8fc6139dbaa2937d172d6ea58183

8210008: custom extension for make/SourceRevision.gmk

Reviewed-by: iris, tbell, lancea
Backport-of: b7ea215e503e9cbb12d4bc5123c90cb6a6bb4866

! make/SourceRevision.gmk