Big Batch of Updates, again

GDAL framework 1.5.1. I also removed the GDAL 1.4 copy from the Tiger installation – I had left that for compatibility with old software, but there were some linking problems with other old frameworks. This will break GRASS 6.2 for Tiger, unless the old Panther frameworks are installed, which will break newer apps, sorry.

UnixImageIO – updated libpng and libtiff.

GEOS framework 3.0.0 – I keep forgetting this one.

SQLite3 framework 3.5.7.

Postgres 8.3.1. Also PostGIS SVN to get some important fixes for using PostGIS with Postgres 8.3.