XD-1927 - Find logging configuration relative to environment

Previously, the scripts all looked for the logging configuration in `$XD_HOME/config` (or `%XD_HOME%/config`).  This caused issues because it meant that if you moved all of the configuration and overrode `$XD_CONFIG_LOCATION` (or `%XD_CONFIG_LOCATION%`), the logging configuration changes would not be found in the new location.  This change updates the scripts to look for logging configuration in `$XD_CONFIG_LOCATION` (or `%XD_CONFIG_LOCATION%`).
Should this one also be XD_CONFIG_LOCATION?