The two cases where the case-sensitive parser functions were used don't
appear to hold any special meaning. The case-insensitive function should
be used as it implements a superset of functionality compared to the
case-sensitive version.
TheBoundaryMatcher is not updated as it is likely it will be removed
altogether. A regex that accepts comments in all relevant places becomes
so hairy it is unmaintainable. It seems that the only working solution
would be to first remove all comments and then perform the regex.
A class capble of detecting statements that change the transaction
state and autocommit mode.
There are still some expansion and optimization to be done.
