2010-1-24 1.8.1: uses updated exception handling of hsql-1.8.1; refactorings 2009-2-15 1.7.3: filtering out of zombie dir paths returned `pg_config --includedir-server', (headers are usually in the top include directory then) to prevent unnecessary error exit. 2009-2-13 1.7.2: constrained requirement of `base' by `>=4.0.0.0' to stop cabal-install from assuming base-3.?.?.?