Soil Update 2

The wavenumber conversion in the soil reflectivity was incorrect. Fixed
to estimate angular wavenumber.
[Done]
*Pitfiles.R: Ingest results file, merge into format from AGU2012.

[WIP]
*Pitfiles.R: Rebuild plotting functions to be more generic, so as to support sRT,MEMLS,TsangDMRT,HUT all at once.
Wavenumber fix for snowsoilreflectivy.m as supplied by josh
[WIP]
*reorg top of file.
*Load obs, tsx, from agu2012
*plotNRCS going well.
[WIP]
*continued work on plotNRCS.
   X=inc added.
   avg_inc
plotNRCS seems basically functional.
Merge commit '5f1f525bdd3f8f034fb4aa55ebe29650956af8b0' into LOCALmaster

* commit '5f1f525bdd3f8f034fb4aa55ebe29650956af8b0':
  Soil Update 2

Conflicts:
	snowsoilreflectivity.m