Minor: ISQL now ignores commented out lines.
Adding support for IF EXISTS to DROP TABLE.
NOT NULL in AUTOINCREMENT tolerated and PRIMARY KEY actively declarations ignored.

So stuff like...
CREATE TABLE `addys` (
  `id` INT(4) NOT NULL AUTO_INCREMENT DEFAULT NULL,
  `addy` CHAR(254) NULL DEFAULT NULL,
  PRIMARY KEY (`id`)
);
... now works without throwing errors.

Also notice Trim('`') calls in CreateTable and DropTable Commands now to tolerate MySQL style backticks around column and table names.

These and the previous checkin's changes are mostly motivated by use of wwwsqldesigner (http://code.google.com/p/wwwsqldesigner/) to design schemas.  The SQL created by that tool, which is MySQL friendly, should be better supported now, though why it defaults to nullable TINYINTs for ids, I have no idea.

Also minor changes to some markdown docs.  TODO: Really should add tests so I know I'm not checking in non-Scottish code.