simplify eb script, no need to change into easybuild dir to set PYTHONPATH correctly

Author: boegel

eb

@@ -27,12 +27,8 @@ version=`python -V 2>&1 | sed 's/^Python \([0-9]*\)\.\([0-9]*\).*/\1.\2/'`
 
 # See http://docs.python.org/using/cmdline.html#cmdoption-unittest-discover-m for -m support
 
-# determine absolute path name
-cd `dirname $0`
-absolute_path=$PWD
-cd - > /dev/null
-
-export PYTHONPATH="${absolute_path}:$PYTHONPATH"
+# add EasyBuild top directory to PYTHONPATH
+export PYTHONPATH="`dirname $0`:$PYTHONPATH"
 if [[ "$version" = "2.4" ]]; then
   python "`dirname $0`/easybuild/build.py" $@
 else