supported X case mesh resolutions

[worleyph]

1. This is probably a feature rather than a bug, but I was trying to find a small mesh resolution to use with an X case. @amametjanov advised that I use

   --res f19_g16 --compset X

which worked. I tried to find something smaller, trying

  --res f45_g37 --compset X
  --res ne4_oQU480 --compset X
  --res ne4_oQU240 --compset X

All three of these failed with

 (shr_mct_sMatPInitnc) Initializing SparseMatrixPlus
 (shr_mct_sMatPInitnc) SmatP mapname idmap_ignore
 (shr_mct_sMatPInitnc) SmatP maptype X
 (shr_mct_sMatReaddnc) reading mapping matrix data decomposed...
 (shr_mct_sMatReaddnc) * file name                  : idmap_ignore
  ERROR: (shr_mct_sMatReaddnc)No such file or directory

for the same shr_mct_sMatPInitnc call (7th one, whichever one it was). Is this expected? Is f19_g16 the smallest? This is not critical, but it would have been useful for a debugging exercise that I am going through at the moment.

2. Also, the diagnostic output for shr_mct_sMatPInitnc and shr_mct_sMatReaddnc ended up int wav.log file, which looks like a bug to me. Should be ??? cpl.log, ??? e3sm.log, but probably not wav.log .