Fixed Superclass Mismatch Error w JDBC adapter

When running with jruby (using`activerecord-jdbcpostgresql-adapter`), got the following error:

    superclass mismatch for class PostgreSQLColumn
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activerecord-postgres-hstore-0.7.5/lib/activerecord-postgres-hstore/acti
    verecord.rb:70:in `ConnectionAdapters'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activerecord-postgres-hstore-0.7.5/lib/activerecord-postgres-hstore/acti
    verecord.rb:69:in `ActiveRecord'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activerecord-postgres-hstore-0.7.5/lib/activerecord-postgres-hstore/acti
    verecord.rb:2:in `(root)'
    org/jruby/RubyKernel.java:1027:in `require'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `require'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in `load_dep
    endency'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `require'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activerecord-postgres-hstore-0.7.5/lib/activerecord-postgres-hstore/rail
    ties.rb:1:in `(root)'
    org/jruby/RubyBasicObject.java:1709:in `instance_eval'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activerecord-postgres-hstore-0.7.5/lib/activerecord-postgres-hstore/rail
    ties.rb:15:in `Hstore'
    /home/ty/.rvm/gems/jruby-1.7.3@rails3/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:36:in `execut
    e_hook'
    org/jruby/RubyArray.java:1613:in `each'
    ...