New Tables:
 * fixed reading of tables from ASCII text files having comment or empty lines (after the table header declaration) as reported by Michael Wetter
 * added line number in error message if reading numeric data from ASCII text file fails
 * added comment lines and empty lines to ASCII text file test.txt

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6498 7ce873d0-865f-4ce7-a662-4bb36ea78beb