git: f4d51098686d..51d8a8b4ac1d - vendor/NetBSD/bmake - vendor branch updated

[Simon J. Gerraty]

The branch vendor/NetBSD/bmake has been updated by sjg:

URL: https://cgit.FreeBSD.org/src/log/?id=f4d51098686d..51d8a8b4ac1d

51d8a8b4ac1d Import bmake-20230414