Rename OSWR into RSWR in SMET
The RSWR parameter name inconsistency betwen smet files and MeteoIO leads to misunderstanding for the end users (and rightfully so). it seems hat the best option would be to rename OSWR into RSWR in the smet specification and display a warning in MeteoIO when the ""old"" name is used, urging people to rename it in their files. Of course, niviz would need to be updated as well...