[ESS] font lock

[Sam Steingold]

I upgraded ESS and now font lock changes the font width.
(ess-function-call-face, ess-numbers-face)
I don't this this is a very good idea for default values.
At least, no other emacs face does it by default.

-- 
Sam Steingold (http://sds.podval.org/) on Ubuntu 12.04 (precise) X 11.0.11103000
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