Merge branch 'multi-domain'

MEMO

loopy/__init__.py

loopy/check.py

loopy/codegen/__init__.py

loopy/codegen/bounds.py

loopy/codegen/control.py

loopy/codegen/expression.py

loopy/codegen/instruction.py

loopy/codegen/loop.py

loopy/compiled.py

loopy/creation.py

loopy/cse.py

loopy/isl_helpers.py

loopy/kernel.py

loopy/reduction.py

loopy/schedule.py

loopy/symbolic.py

test/test_linalg.py

test/test_loopy.py