[texworks] Alternative location for output PDF files (and, ideally, all non-source files)

[Akira Kakuto]

Dear Ignasi,

> But this will break synctex
>
> http://tex.stackexchange.com/questions/31753/synctex-problem-with-output-directory-in-texlive

The user is copying the pdf back to the current directory.
This is apparently not allowed because synctex data are written with
fullpath.

Best,
Akira