A couple of minor changes in PSQL queryies from Postgres 9.3.
merge MMcM: A couple of minor changes in PSQL queryies from Postgres 9.3.

Merge pull request #972 from MMcM/akiban-server/pg-psql93
https://github.com/FoundationDB/sql-layer/pull/972
Move full text population to foreground and misc cleanup
Close on drop
No assert needed
Update to java-merge-sort 0.9.1, with builtin iterable sorter.
Exception cleanup
merge nathanlws: Upgrade to java-merge-sort 0.9.1

Merge pull request #974 from nathanlws/sql-layer/merge-sort-0.9.1
https://github.com/FoundationDB/sql-layer/pull/974
merge nathanlws: Move full text population to foreground and misc cleanup

Merge pull request #973 from nathanlws/sql-layer/fulltext-populate-foreground
https://github.com/FoundationDB/sql-layer/pull/973