triangle4 stores and of list bit
triangle1 stores end of list
triangle1v stores end of list
triangle4i stores end of list
triangle4v stores end of list
triangle8 stores end of list
bezier1 stores end of list
bezier1i stores end of list
virtual_accel stores end of list
Revert "enabling integer min/max only for AVX2"

This reverts commit 3e27d20b6ab7bd9165f141c26d4d5aa2cc6a57a7.
using primID to encode end of primitive list
bugfix in triangle4.cpp
bugfixes
Merge branch 'devel' of https://github.com/embree/embree into devel