Embree version 1.1 release.
renamed pointer atomic_cmpxchg to atomic_cmpxchg_ptr
fixed alignment problem with parameter passing under windows
bugfix in splitter_parallel.cpp
added support for re-using materials by name
Merge branch 'v1.1' of https://github.com/embree/embree into v1.1
bugfix in rcp function of affinespace, there was a problem when instantiated with quaternions
Merge branch 'master' into v2.0