Make building depend on generic PDF viewer executable that is resolved depending on OS.
Make building depend on generic PDF viewer executable that is resolved depending on OS.

Ignore-this: b7f36d0d7db60e5d5c719d941da2e9ec

darcs-hash:20100315030609-86a4e-64a603d6863b2aa03af22f09c426c3d8400953b4.gz

nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf