Implemented fix in LDT to address when the
  Soil texture force exclusion of water points during fill is not
  set in the ldt.config file, even though STATSGOFAO soil texture
  and more than 1 surface model type are selected.

 The default value is set to "false", which causes a mismatch for
  points north of -60S in STATSGOFAO soil texture and when surface
  type, e.g., open water, are selected -- and causes LIS run to fail.

 This is issue is documented in the LISF GitHub issue NASA-LIS#1658.

 In addition, some additional info has been included in ldt.config.adoc
   and some additional comment notes for SRTM30 native topo readers
   for dealing with points south of -60S.