Revert "Moved tests that were only intended as tests from Modelica.Media.Examples to ModelicaTest.Media. This fixes #1053."

This reverts partly commit r6139 by copying back the test models

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6158 7ce873d0-865f-4ce7-a662-4bb36ea78beb