#644 fixed ("FixedDelay function issue")
fixed by providing an improved description of operator delay
in ModelicaReference
"To avoid excessive storage requirements
and to enhance efficiency, the maximum allowed delay time has to be given
via delayMax, or delayTime must be a parameter expression (so that the 
constant delay is known before simulation starts)."

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6152 7ce873d0-865f-4ce7-a662-4bb36ea78beb