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Taking a reference to a public base class object in a copy constructor allows
implicit type conversion even if the constructor is declared explicit. This
causes undesired type conversion in instatiation of timeseries containers. In
such cases the header data commonly is lost silently. I get rid of all such
constructors, forcing users to explicitly express the desire of type
conversion.

Merge branch 'odatstream' into timeseries

Conflicts:
	src/ts/wf/autocorr.cc

Provide proper input/output facilities on branch timeseries.

- place error handling in separate compilation unit
- place type definitions in separate header file
- provide input/output operators
- use debug code of libtsxx

Assignment and copy operations were ambiguous, because all class templates use
the same series container type as public base class.

Merge branch 'cross'

- ts/wf/cross now provides proper scaling and a reasonable definition of
  sample times in both modes (fixes issue #11)
- ts/wf/cross now uses libdatrwxx and provides access to all supported input
  and output file formats

It is a fault to use "unsigned int" when assigning a series index in any case.

Input operators for idatstream no longer are defined inline. This was
necessary, since idatstream functions have one level of indiraction less than
functions in odatstream. Input operators for idatstream produce debug output,
while in odatstream debug output is produced in member functions.

A common debug flag for all stream classes now is provided in the base classes
idatstream and odatstream. The debug member data is removed from all specific
input and output stream classes. This way we guarantee that any class which
can be referred to through ianystream and oanystream provides a debug flag.
This is necessary to allow input and output operators for example to check
whether the stream is in debug mode. This way generic operators or functions
can print a debug messages.

Recompiled test cases and full Seitosh repository to make sure that modified
interface operates properly in existing code.

provide new feature for stuplo