add 'regexp' to keywords that has to be escaped whether it is a column name
fix escaping quotes for CREATE INDEX -> ALTER TABLE case
fix multiline INSERT escaping: better catching of the end of command, quote backslashes before single quote i.e. 'C:\'
Merge pull request #1 from frol/master

Escape 'regex' keyword, escape quotes for CREATE INDEX -> ALTER TABLE, Better detection of the end of multiline INSERT escaping