bug#10327: Please document include and include-from-path

[Ian Hulin]

I think I know what these do, but could you include them in the docs,
and point out how differ from load and load-from-path.

Documentation something like this?

— Scheme Procedure: include filename

    Load filename and add its contents to a file currently being
compiled. Unlike /load/ its contents are not evaluated immediately.
The load paths are not searched.

— Scheme Procedure: include-from-path filename

    Locate /filename/ in the load paths, load /filename/ and add its
contents to a file currently being compiled. Unlike
/load-from-path/ its contents are not evaluated immediately.