Partial merge of r213507 from head:
In r178993, the ability to view a man page by giving a path to the
man page itself was added, but never documented. Subsequently, the
GNU-licensed man(1) and its man page were replaced by BSD licensed
implementations, and later on this undocumented functionality was
also added to the new BSD-licensed man(1), together with
documentation.
This is a merge of the documentation part of that commit (r213507)
into the GNU-licensed man(1) man page in stable/8, in order to
document the available functionality.
PR: docs/158973
Merge help: bz
Approved by: gabor (mentor)
git-svn-id: svn://svn.freebsd.org/base/stable/8@236908
ccf9f872-aa2e-dd11-9fc8-
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