Fix mapping of table with embedded period and associated sequence. Fixes #79.

 * pyrseas/dbobject/__init__.py (split_schema_obj): If double quotes
   present, remove them first and then split on a quoted period, else
   split on period.
 * tests/dbobject/test_table.py: Add test to verify correct mapping.
Partial reversion of 11 Oct 2013 change 3c96d69d. Fixes #80.
Merge branch 'r0.7'