git: 2b7d40ea0c8e..0da44885831d - vendor/unifdef - vendor branch updated

[Dag-Erling Smørgrav]

The branch vendor/unifdef has been updated by des:

URL: https://cgit.FreeBSD.org/src/log/?id=2b7d40ea0c8e..0da44885831d

0da44885831d Add missing version.h.