Case mismatch in method call: isSubClassOf

[RogierZeebregts]

Hi,

There is a case mismatch in method call: isSubClassOf (lexpress/doctrine1/lib/Doctrine/Table.php, line 359), referring to ReflectionException::isSubclassOf.

[mkopinsky]

Method names in PHP are case insensitive, but I think this may as well get fixed. I'll open a PR.