have a primary key. Some of users want to use not-null unique keys rather than
primary keys because postgres doesn't support REINDEX PRIMARY KEY CONCURRENTLY.
- Support 9.1dev.
- Improve Makefile to use PGXS automatically.
- Add wait-timeout option and use SET statement_timeout instead of NOWAIT.
This can avoid infinite NOWAIT loops to reorganize heavily accessed tables.
- Support native build with MSVC on Windows.
