Log Message:
Update GMT to the most recent, supported, version 4.1.4.

The most significant changes in 4.0 include:

o Time-series support
o New Tools:
	- gmt2rgb
	- grdblend
	- pslegend:
o 30 new program options
o More than 23 general enhancements

The releases 4.1 and 4.1.1 to 4.1.4 include the following changes:
o numerous significant bug fixes
o many added program options
o added features and capabilities

For a complete list of changes, see
http://gmt.soest.hawaii.edu/gmt/gmt_releases.html