Miscellaneous fixes

[brian-eaton]

Addresses these issues:

. Issue #1045 - buildcpp does not report errors reported by cam configure

• modify buildcpp so that error messages from CAM's configure appear in
  the log output

. Issue #1015 - SILHS subcolumns output as all zeros.

• testing for this issue revealed a bug when subcolumns were used with
  the SE dycore. A fix is added to check_energy.F90. This doesn't fix
  the problem with zeros in the subcolumn output, but that is the same
  problem previously reported for COSP in issue COSP output appears to be broken #944. The problem only
  appears when SE grid output is interpolated. A workaround is to output
  the subcolumns on the native SE grid.

. Issue #1044 - Remove solar_htng_spctrl_scl from aquaplanet use case

• also cleaned up the aquaplanet_rce_cam6.xml file which had duplicated
  settings of several variables. The second setting is not used because
  the first setting takes precedence. Note that the setting of
  solar_htng_spctrl_scl to false in aquaplanet_rce_cam6.xml is needed
  because it is overriding the default of true for cam6 with RRTMG.

. Issue #1042 - write performance of cam rh files

• Reorders variables in the rh files. Significantly improves file write
  performance on derecho.

. resolves #1045 (and closes #1046)
. resolves #1015
. resolves #1044
. resolves #1042 (and closes #1043)