git: a1320769a9f7..c408e7413bcf - vendor/less - vendor branch updated

[Xin LI]

The branch vendor/less has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/log/?id=a1320769a9f7..c408e7413bcf

c408e7413bcf Vendor import of less v691.