Querying from R if '--quiet' had been set

Thanks to Martin for additional off-list discussion; this is now addressed
'both ways' as I did file bug report #18913 with the short patch but also
have a short check in .Rprofile serving the same purpose:

    ## interactive sessions get a fortune cookie (needs fortunes package)
    quiet <- any(!is.na(match(c("-q", "--quiet"), commandArgs())))
    if (interactive() && !quiet && requireNamespace("fortunes", quietly=TRUE))
        print(fortunes::fortune())

This could be made a little better with #18913 to provide quiet() but already
works.  Now, when I use '-q' in startup no fortune is shown as desired.

Cheers, Dirk

dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org