sci-mathematics/rstudio: version bump to 1.1.368

sci-mathematics/rstudio: version bump to 1.1.368

Bump to 1.1.368. This also updates the clang pandoc patch
Fixes bug 626056, thanks to Harris Landgarten for reporting, Sobhan
Mohammadpour for adding the missing dependency in 1.1.383.
Fixes bug 626062 by bumping rstudio to version 1.1.383 that builds with R 3.4.
Thanks to Harris Landgarten for reporting, jstein, Volkmar Glauche, Bernd
Feige and yuri for testing and helping, Sobhan Mohammadpour for bumping
rstudio in PR #6003.
Fixes bug 622254, thanks to jstein for reporting, Volkmar Glauche, Bernd Feige,
Carl W. Harlow, Rolf S. Arvidson, Oleg, Alex and Sobhan Mohammadpour for
testing and helping.
Fixes bug 633936, thanks to Neil for reporting, François Valenduc and Bernd
for helping.

Suggested-by: Bernd Feige <Bernd.Feige@gmx.net>
Gentoo-bug: 626056, 626062. 622254, 633936