update project name in build.xml
change name in ixy.xml
looks like the driver changed from .shutdown to .close on sessions
simplify helper paging code, add test, and fix test

paging with order by over multiple partitions isn't allowed so that test had
to be fixed.
redundant assertion
test for setting page size to several different values before query
add test for changing page size after results exhausted.
test for when page data shifts before/after the current page
Merge branch 'master' of https://github.com/knifewine/cassandra-dtest-jython