implemented Smits' algorithm for RGB-to-spectrum conversion.
removed redundant comment.
Merge branch 'master' of github.com:jupiter-jazz/appleseed
disabled AVX code generation in third-party libraries.
we no longer define the 'override' preprocessor symbol for those compilers that don't natively support the C++11 'override' keyword, as this clashes with boost.python with gcc versions prior to 4.7 (which is the first version to support the 'override' keyword). instead, we now define an 'OVERRIDE' processor symbol which either has no effect, or is a synonym for the 'override' keyword of C++11 when it is supported.
minor style tweaks.
no longer link against libicu (International Components for Unicode) on linux.  the build instructions on the website have been updated such that linking against libicu is no longer required (boost and xerces-c are now built without icu support).
updated Mayaseed to version 0.3.2.
updated copyright notices.
fixed some copyright notices.
minor tweak to the log output in watch_folder.py.
watch_folder.py now correctly handles appleseed binaries paths containing spaces.
updated/tweaked more copyright notices.
renamed command line argument -f to -p in watch_folder.py.
added -f command line argument to watch_folder.py to allow setting the output format (e.g. png, exr).
added const qualifier.