GMT 3.3.2 was released to address several annoying bugs that inadvertently were introduced in GMT 3.3.1. At the same time we have made minor changes to how GMT is installed. To ensure that the GMT archives only contain files that are either in the public domain or released under the GNU Public License, we have reverted back to our earlier practice of letting Dave Watson's Delaunay triangulation routine be the default, while the much faster implementation of John Shewchuck can be selected as an option. Shewchuck's files are also pulled out of the main GMT archive and are now distributed as a separate archive (the updated install_gmt script are cognizant of these changes).
We have also changed the way GMT deals with SI and US default values. In previous releases, one could choose SI or US at compile time, and that would select what default values GMT would use when the user had no .gmtdefaults file. This implies that the GMT executables behave slightly different for SI and US. In order to have only one set of executables, we have made the SI/US selection a run-time feature. Thus, one can switch back and forth at anytime. The GMT Default (SI or US) is kept in the file gmt.conf in the lib subdirectory and determines what defaults are used.