Merge branch 'master' into remove-auto-from-insn-temp-var-type

doc/index.rst

doc/ref_kernel.rst

doc/tutorial.rst

examples/python/hello-loopy.loopy

loopy/kernel/__init__.py

loopy/kernel/array.py

loopy/kernel/data.py

loopy/transform/add_barrier.py

loopy/transform/batch.py

loopy/transform/buffer.py

loopy/transform/iname.py