[GRASSLIST:7012] SRTM 1-arcsec data now supported

Hi folks,

I've just added support for 1-arcsec SRTM elevation data to r.in.srtm.

1-arcsec 30m, US only
3-arcsec 90m, World < 60deg latitude

get the data here:
  http://www2.jpl.nasa.gov/srtm/
  ftp://e0mss21u.ecs.nasa.gov/srtm/

In 6.1-CVS; will not be in GRASS 6.0.1 but will be in GRASS 6.2.

seems to work ok..

have fun,
Hamish