class HDstUtilities: public TObject

 This function parses a text file and save the "key = value" pairs
 found on the lines of that file in a structure which looks exactly
 like the one filled with the command line arguments of a program.
 A file might look like that:


 #
 #  Example config file
 #


 # a comment
    # another comment

 family-name = lang
 name=simon
 institute = GSI  # in Darmstadt

 telephone  = 06519 / 71-2914
    fax= "06159 / 71-2989"
 --email = 's.lang@gsi.de'

 The corresponding command line would look like this,
 filename --family-name=lang --name=simon --telephone="06159 / 71-2914"...
 which is what the getopt_long() function expects. Here, "filename"
 is the name of the test file being evaluated.
 The function fills argc and argv with the data and returns true on
 success. It is written in plain C (except the return type),
 because it's lazy author wants to use it in other C programs as well.

 This function converts a string which looks like a command line
 into the related array of arguments as it is usually passed to the
 main() function of a program. Results are stored in argc and argv.
 The first string (usually the name of the executable) is set to
 "from-string" here.
 Use (double-) quotes to protect arguments containing white spaces
 from being cut.
 This function is written in plain C because it's lazy author wants to
 use it in other C programs as well.

 This functions frees the memory used by a command line argument structure

 This function parses a list of command line arguments (saved in
 the structure referenced by 'argc' and 'argv'), creates a new list
 without the argument specified by 'arg' and returns this argument's
 name or its value (then one must append a ':' to its name).
 The memory of the returned string must be deleted by the caller of this
 function. The references 'argc' and 'argv' are changed to the location
 of the new list, the old one is not changed.

 This function return "dir/file" without the filename extension of 'file'.
 "file" can be a list of space separated filenames (including paths),
 then the first one is taken. Paths are stripped from 'file', anyway. If
 'dir' is a null string, then just the stem of 'file' is returned.