Add missing | characters

These were missed in the earlier commit.
Merge pull request #83 from kevinushey/patch-2

Add missing | characters in cpp highlighting rules
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Merge branch 'master' of github.com:rstudio/rstudio
leave portmapped localhost urls alone
more robust handling of redirects for localhost portmapped urls
respect custom specification of repositories in .Rprofile
add strings as factors and na.string options to the data import dialog