Correct ndep end year for SSPs, 2-degree CMIP6WACCMDECK with C-isotopes off, fixes mksurfdata for high resolution

Fix a couple small issues. Correct end year for ndep for SSP's so can run to the end of 2100. Some fixes to mksurfdata_map for high
resolution surface datasets. Have 2-degree WACCM-CMIP6DECK match a user-mod directory without carbon isotopes on. Remove the
ne120np4 and conus_30_x8 surface dataset files, as they can't be used (see #673).
Remove 8x16, 32x64 resolutions as they are no longer needed and there are problems with them. Add in the mapping files needed for
94x192. Check that special landunit percent area's is not less than 0.0, and don't let PCT_WET be less than zero for areas with
ocean (see #673).

Change some of the longer single point tests to use Qian forcing (as faster, less memory, less problems). Add compsets for this.
This change was also done on master.