renamed renderer::TrackingSpectrum to renderer::DynamicSpectrum.
don't replace spaces by underscores in aov file names.
sped up a test scene.
Merge remote-tracking branch 'upstream/master'
Prefix macros that appears in CMakeLists files
Prefix some macros with APPLESEED_
Fixed dllsymbol include guard.
save memory when building on Travis by disabling MySQL and PostgreSQL services.
small code tweaks.
Fixed indentation of DEFINE and DECLARE_ARRAY macros.
Merge pull request #621 from est77/est_prefix_macros

Prefix more macros with APPLESEED_ (Continuation of PR #612)
tweaked a comment.
no distance attenuation for the physical sun light.
made bump offset user-configurable, plus a few small code cleanups.
added an assertion and tweaked a comment.
added an assertion and commented the code.
Merge branch 'master' of github.com:appleseedhq/appleseed
Fixed compile error.