03-aug-2005 NvE AliSignal::GetSignal has been extended to support various (de)calibration facilities.
Printout is now also provided in AliSignal::List when only calibration data exist
for AliDevice (or derived) objects.
+05-aug-2005 NvE Typos fixed in AliAttrib::GetCalFunction and AliAttrib::GetDecalFunction which
+ erroneously always returned a null pointer.
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