refs #1151:
 * replaced sscanf by strtod with error check
 * added locale independent strtod where applicable (Visual C++ >= 2005, GCC on Linux)
 * refer to a locale independent strtod from Netlib

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6633 7ce873d0-865f-4ce7-a662-4bb36ea78beb