[Rd] quartz device (PR#13115)

[vdewit at ulg.ac.be]

Dear,

The quartz device doesn't work in R version 2.7.2 (2008-08-25), on my
MacBook Pro. For example, when I just type 'demo(graphics)', the quartz
window stays empty and the clockwise time indicator keeps on running in
the R window.

What should I do to fix this bug?

Thanks in advance,

Vanessa