K 10
svn:author
V 3
0mp
K 8
svn:date
V 27
2020-11-01T17:27:48.606772Z
K 7
svn:log
V 255
Document how to use sudo for SU_CMD

It is rather common for the ports users to replace su(1) with sudo(8)
within the SU_CMD variable. Let's document it in the manual page (so far
it's been hidden in a comment within bsd.commands.mk).

MFC after:	2 weeks

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