Produce DDL for MySQL table field with ref in 'ON UPDATE'
Fix warning due uninitialized var

"Use of uninitialized value in concatenation"
Add Changes entries for 6c77378 and 1fb4f40
Factor out quote option handling
Fix quoting in Producer::MySQL
Clean up identifier quoting in Producer::PostgreSQL

Removes the unused quote_field_names, which has not actually done
anything since since commit 2230ed2a (v0.11012).
Escape the closing quote character when quoting indentifiers
Remove unused table_name option from PostgreSQL::create_* calls

They all get the table name from $object->table->name
Consistently wrap and indent create_foo($foo, { ... }) calls
Fix handling of quoted names in Parser::SQLite
Fix handling of quoted names in Parser::MySQL
Fix handling of quoted names in Parser::PostgreSQL
Test table and field names with quote characters in them
Use factored-out option parsing in Producer::PostgreSQL
Fix handling of quoted literals in Parser::SQLServer
Escape the quote charcter when quoting identifiers in Producer::Oracle
Fix handling of quoted names in Parser::Oracle
Fix parsing of DROP TABLE in Parser::Oracle

The grammar is still severely lacking, but at least now it passes
t/60roundtrip.t with a trivial table (no auto-increment or foreign
keys).
Fix escaping/parsing of single-quoted strings in SQLite

Also fix parsing of decimal numbers.
Fix decimal and single-quoted values in Parser::PostgreSQL