Added support for nested multiline comments and testcase to PostgreSQL tokenizer
Added testcase to TestStandartConfirmingStrings
added quotes in EscapeString when Source is empty.
added FreeMem to EscapeString from last egonhugeist's commit
Added support for PostgreSQL dollar-quoted strings to query parser.
another tescase for TestStandartConfirmingStrings with ansi text
more OIDs of common PostgreSQL array types in PostgreSQLToSQLType
Tokenize all characters above #191 as ttWordState