Update all headers
Change some internal state to be indexed by column not field.
Handle various kinds of column defaults.
Add tests for default cases.
Make a couple of places that use createTempFile also do deleteOnExit.
merge nathanlws: Update all license headers

Merge pull request #4 from nathanlws/sql-layer/fdb-license-update
https://github.com/FoundationDB/sql-layer/pull/4
merge MMcM: Honor column defaults in the row readers

Merge pull request #6 from MMcM/akiban-server/row-reader-defaults
https://github.com/FoundationDB/sql-layer/pull/6
merge MMcM: Make a couple of places that use createTempFile also do deleteOnExit.

Merge pull request #7 from MMcM/akiban-server/temp-file-delete-on-exit
https://github.com/FoundationDB/sql-layer/pull/7