Fix property handling issues
replace deprecated feature test
Merge branch 'master' of 192.168.85.201:FLAMCLEP
Improve error handling if supplement string parsed

Properties are resulting in a supplement string per symbol,
the supplement string are parsed if no corresponding parameter
entered on the command line, at this point the error location
was not well defined.

Now we support:
Correct error messages for all cases:

- from command line
- from property list
- from environment variable %s
- from default value of argument %s
- supplement from property file %s
- from parameter file %s
- from command file %s
- in file %s

as possible locations
Support DD names for all write operations
Adjust change log
Change parsed switch from =TRUE to =ON

to be in sync with property list syntax
do not try to open HOST specific file on other platforms
Use use setenv instead of putenv for DD:STDENV on HOST
Use snprintf() instead of sprintf() for static array strings
Support file name mapping (+/<Cuser>)
Introduce SET/GETENV() macros
Fix compile error on z/OS
Rework format string, file name and envar handling
Adjust docu (review required)
Print SYOPSIS, DESCRIPTION and ARGUMENTS if keyword man used at help