The user can define environment variables as additional way to submit
options to the tools. All options are accepted and used as default.
2. Environment Variables
All tools scan 2 environment variables like a command line
and before the real command line is scanned.
First the environment variable WIIMMS_SZS_TOOLS is scanned.
This is the same variable for all tools.
Second, one of the tool specific environment variables
in the format <tool>_OPT like WSZST_OPT or WBMGT_OPT is scanned.
Each environment variable is converted to a parameter list
and each SPACE or other control is a word separator.
Quoting is not possible.
Only options and their parameters will recognized.
If such option is not compatible with the command it is silently ignored.
Example: WSZST_OPT="--overwrite -vv"