db_xml.py: into_table_name(): Format relational functions' into table names as a function call on the value column, using special chars for readability

sql.py: run_query(): Exception parsing: Use "(.+?)" wherever possible to match names containing special chars

sql.py: clean_name(): For clarity, just remove '"'s, so that "."s are preserved and show the path structure of the input name

db_xml.py: put_table(): sql.put_table(): Name the into table ...literal instead of ...value if the value column is a literal value

bin/map: Logging: log(): Remove extra debug info from DB query messages and format level 1.5 (summary) messages as Redmine list items

sql.py: put_table(): Renamed temp_prefix param to into and allow it to be a sql_gen.Table object. Use into directly as the pkeys table, and make its default value be `out_table.name+'_pkeys'`.

db_xml.py: put_table(): Pass custom temp_prefix to sql.put_table() for relational funcs, so that their value param's input column name is included in the temp table name

sql.py: put_table(): Added optional param temp_prefix for the prefix of generated temp tables

sql.py: put_table(): Made debug messages more self-documenting

sql.py: put_table(): Changed "Setting missing rows' pkeys to NULL" to "Setting pkeys of missing rows to NULL" to avoid having single quote in debug output, which messes up text editor SQL syntax highlighting