sql_gen.py: Added esc_name() and use it in MockDb.esc_name()

sql.py: next_version(): Use special chars in version part of name string for clarity

sql.py: mk_insert_select(): embeddable: function_name is first line of query for clarity, and to reduce length from including the column names. This also fixes the problem of double quotes around column names in the previous function_name.

sql.py: esc_name_by_module(): Double embedded quotes to escape them instead of removing them

sql.py: put_table(): Use "-" to separate temp table suffixes from into table name

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