add raw h5py file with into, discover, ...

This will replace HDF5
remove HDF5 data descriptor
sql: test dshape_to_table
sql: create_from_datashape
sql: into functions for sqlalchemy.Table directly

This skips the SQL object
sql: into Table <- CSV works on native tables, not SQL objects
sql: resource/create_index create Tables
sql: shift tests from blaze.SQL to sqlalchemy.Table
sql: into with sqlalchemy.Table
remove SQL object entirely
h5py: py3 compatibility
into: include explicit mongo sqlalchemy.Table connection
sql: merge data/sql.py and sql.py
remove .sql import
expr: binop propagates names when they're the same

Fixes #871
Merge pull request #869 from mrocklin/replace-SQL

Replace SQL with sqlalchemy.Table
expr: fix split signature on selection, like, ...
Merge branch 'master' into replace-HDF5

Conflicts:
	blaze/__init__.py
	blaze/api/into.py
	blaze/data/__init__.py
	blaze/data/tests/test_interactions.py
	blaze/tests/test_resource.py
Merge pull request #867 from mrocklin/replace-HDF5

Replace HDF5 with h5py.Dataset
Merge pull request #873 from mrocklin/pandas-boolean-display

expr: binop propagates names when they're the same