Corrected data type on Pantheria dbtk; added Windows executables.
Changed numeric data types requiring precision to DOUBLE.
DBTK scripts now have the option to accept command line arguments; user will have to manually enter anything not supplied through the command line.
Added output for command line arguments.
Cleaned up docstrings to follow PEP 257 conventions.
Moved connecting to the database out of dbtk_from_txt into a separate function in dbtk_tools. This should allow us to avoid connecting to the database more than once in cases where there are multiple tables.
Added dbinfo class to dbtk_tools to accept database arguments, separated all MySQL-specific logic into one function that returns a MySQL db cursor.
Updated dbtk_ernest2003.py with new docstring.
Minor cleanup following the overlapping commits.

1. Removed import of dbtk_tools into dbtk_tools
2. Moved TO DOs out of docstrings and into comments following Code Like a Pythonista
Removing dbtk_from_txt since it has been merged into dbtk_tools.
Added table_info class and changed setup function to create_table; added support for PostgreSQL.
Fixed data type conversion for "skip" and "combine" and enabled script to set number of header lines to skip.
Enabled command line argument specifying database engine; separated command line argument checking procedure from cursor functions into separate function.
Corrected variable name bug that had broken datacleanup.emptyvaltonull
Updated documentation; created separate function for creating database (shouldn't be in create_table); added dbtk_bbs.py.
You can now specify in each DBTK script the name of a cleanup function to be called for each value.
Create_table now accepts an opened file instead of a URL, so that the file can be processed before being passed to the function.
Added docstrings to all functions in dbtk_tools. Minor change to the way length is specified in variables in convert_data_type.
Minor changes to conform with PEP style guide.
Fixed variable length issue in convert_data_type; minor change to the way passwords are entered, since getpass wasn't functioning very well in the windows executables.