fixes TestSpatial in pagestore mode

and makes finding real NPE problems super hard

otherwise we use it for tests where we actually want pagestore

not sure why

improve performance of planning large queries

not sure why my planning change triggers this change, but it's definitely an improvement

 Add tests for simple one-column index sorting

we report input line no, which is more useful

that is experimental

for debugging purposes

at some point I managed to remove the pagestore testing, put it back

Assorted changes

Session.getTransactionId should return a more distinguishing value

#394: Recover tool places COLLATION and BINARY_COLLATION after tempor…

The newly introduced Transaction.sequenceNum is a better choice than Transaction.transactionId

Improve script exceptions

1041 trigger

#1023: MVCC and existing page store file