* Remove a lingering prctl call
Fixes #34

* Fix COLLADA DOM library name

* Merge calls in Linux and MacOS

* Changed bibliography package to biblatex (ACM bibtex is no longer
supported)
* Added the missing bumpy sphere image + the relevant Holzschuch cite
* Fixed a plugin ref in normalmap
* PDF requires two more runs of pdflatex after bibtex
* The missing Stanford bunny image was removed (I couldn't get the
material to work)

* Add MSVC2017 build config and project
Porting the VS solution also enables debug running via NMake; fixes #24

* Edited genproj.py for MSVC 2017

The CMake build system has not been maintained for years and does not
work correctly anymore. Rather than keeping it here as a "trap" for new
users, I'll remove it for now. FWIW Mitsuba 2 will have a much nicer
CMake build system that works consistently on all platforms.

Fix boost include error occurring in Ubuntu 16.04.

sunmodel: accept animated transformations (even if animations aren't directly supported within SunModel)

Fixed an incorrect radiance conversion factor in 'coating' and 'roughcoating' reported by Attila Afra.

The models now produce the right falloff compared to Monte Carlo
reference renderings with explicitly instantiated layers

Implementation of the paper 'Accurate computation of single scattering in participating media with refractive boundaries' contributed by Nicolas Holzschuch