added API calls to share buffers with the application, still not working
implemented buffer class
sharing of data between application and embree works
triangle4i works with 4 byte alignment of vertices
disabling buffer offset and stride for xeon phi
support to disable buffer strides
documentation for buffer sharing, set Embree version to 2.2
removed vertex3f function again
buffer stride tests in verify
disabling profile mode in builders
Merge branch 'swoop'
Merge branch 'master' of https://github.com/embree/embree