Provide example of solving a least squares problem.

Fix a type in functions names and set at least one of the elements
differently, such that the result of a transpose operation can become
apparent.

Introduce output operator for two-dimensional array in the example program.

Where several values in an argument to a parameter must be separated (like in
the 'irtap' option of the Fourier domain procedures) white space ( ), commas
(,), and semicolons (;) are allowed as field delimiters, at your convenience.

reason: libstfinv is used by IFOS2D and friends. The parameter file parser
used by these programs uses a comma to separate configuration parameters. This
conflicts with the meaning of a comma as field delimiter within on
configuration parameter.

The previous version of tijerasxx silently assumed that time series index
range upon input would start with index zero. When reading data in binary
format (libdatrwxx) the time series index range is provided in data file such
that input time series index range may start with any integer value.

The new version correctly handles these cases by operating in the index range
of the input series when extracting a subset of the series.