Scott Kostyshak f7928f48a6 More elegant knitr support and bug fix
Implement a more simple and elegant integration of the R package knitr. Now,
lyxknitr.R does not need to move or copy files at all.

This also fixes a bug: when /tmp was on a different file system (e.g.
encrypted home), lyxknitr.R failed to move files to /tmp because it relied on
R's 'file.rename' function, which in turn relied on the rename function in
<stdio.h>, which was failing with the EXDEV errno.

Patch from Yihui Xie.
2012-10-06 21:01:34 -04:00
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