[Rd] Deprecated component in plot.histogram (PR#2696)

[j.c.rougier at durham.ac.uk]

Hi everyone,

As "intensities" is deprecated as a synonym for "density" in the
output of hist it would be a good idea to replace its occurence with
"density" in plot.histogram, where we currently have

    y <- if (freq) 
        x$counts
    else x$intensities

Note that, to add to the confusion, x$density is also referred to in
plot.histogram.

Cheers, Jonathan.

--please do not edit the information below--

Version:
 platform = i686-pc-linux-gnu
 arch = i686
 os = linux-gnu
 system = i686, linux-gnu
 status = 
 major = 1
 minor = 6.1
 year = 2002
 month = 11
 day = 01
 language = R

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