#795 fixed (Physical types in Modelica.SIunits should not have start, min, or max values):

Changed one detail from the previous fix:

- Removed "nominal" from "Pressure" and included "nominal=1e5" in AbsolutePressure.
  Reason: "Pressure" is used both for relative and absolute pressure.
  For relative pressure a nominal value of 1e5 is quite arbitray and might
  be often not a good value. For an absolute pressure, a nominal value of
  the standard atmospheric pressure on earth is in nearly all applications
  better as the default of nominal = 1.

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@5856 7ce873d0-865f-4ce7-a662-4bb36ea78beb