Replaced the_context() by theory "Presburger" in call of invoke_oracle.
#!/bin/sh
#
# $Id$
# Author: Markus Wenzel, TU Muenchen
#
# configure - adapt Isabelle distribution to system environment
## patch scripts
cd "`dirname "$0"`"
if bash -c :
then
bash lib/scripts/patch-scripts.bash
else
echo "FATAL ERROR: bash not found!"
exit 2
fi