Change default calculation in r.sun to include topographic shadowing

[newcombttg]

The r.sun command has a -s option to incorporate the shadowing effect of terrain on the calculations. Request that this be made the default. I understand that there are circumstances where one would not want the terrain shadowing to be used, but it seems that incorporating terrain shadowing as the default would give the more commonly desired outcome.

[hamish]

any votes on the matter from the user community?

[hamish]

Yann and MarkusN like it too; done in r55187.

There is now a '-p' planar flag. (if you like a better non-"s" letter, by all means change it..)

Also I expanded some option names to take advantage of the new grass7 underscore option name parsing.

Hamish

[neteler]

Updated also: ​http://trac.osgeo.org/grass/wiki/Grass7/NewFeatures#Rastermodules

[hamish]

see also the "Renamed options" section further down the page, already done. :)

​https://trac.osgeo.org/grass/wiki/Grass7/NewFeatures?action=diff&version=143

H