Merge branch 'blender2.8' into userpref_redesign

CMakeLists.txt

build_files/build_environment/CMakeLists.txt

build_files/build_environment/cmake/harvest.cmake

build_files/build_environment/cmake/sndfile.cmake

build_files/build_environment/install_deps.sh

build_files/cmake/macros.cmake

doc/doxygen/doxygen.intern.h

doc/doxygen/doxygen.source.h

doc/guides/blender-guardedalloc.txt

doc/python_api/examples/bge.texture.py

doc/python_api/rst/bge.texture.rst

doc/python_api/rst/info_overview.rst

...amics/ConstraintSolver/btGeneric6DofSpring2Constraint.cpp

extern/ceres/CMakeLists.txt

extern/ceres/bundle.sh

extern/gflags/CMakeLists.txt

extern/gflags/README.blender

extern/gflags/src/gflags.cc

extern/gflags/src/gflags/config.h

extern/gflags/src/gflags/gflags.h