bin/map: Removed no longer used debug param (verbose=2 is used instead)

bin/map: Fixed bug where verbose_errors' default value depended on debug var, which was not yet set. Removed verbose_errors param and instead turn verbose_errors on whenever verbosity >= 1. Verbosity defaults to 1 in test mode.

bin/map: Logging: Don't set sql.run_raw_query.debug, because it is not used anymore (sql.connect(log_debug=...) is used instead)

bin/map: Logging: Print debug messages (level > 1) prefixed with their level, to distinguish higher- and lower-level debug messages

sql.py: put_table(): Only display warning for exceptions with no handler (which are unexpected), not missing mappings for NOT NULL columns (which are normal in datasources without those columns)

sql.py: put_table(): Log summarizing debug messages with a level of 1.5 so they will be displayed even when the major SQL queries (which have a level of 2) are not shown

bin/map: Provide a log_debug() function to sql.connect() if verbosity > 1 rather than >= 2, to support fractional verbosities

sql.py: log_debug_none: Fixed bug where needed to take kw arg level to work with verbosity-based logging

bin/map: Allow fractional verbosity values

sql.py: Functions that version created tables, functions, etc. if they already exist: Use (default) exc_log_level=4 to hide the unsuccessful attempts to create items that already exist and show only the successful attempt