fix install for python3, update binary_c_python for clist changes

install.sh

@@ -5,8 +5,15 @@
 VERSION_NUMBER=$(cat "VERSION")
 echo "installing binarcpython version $VERSION_NUMBER"
 
-python setup.py clean
-pip uninstall binarycpython
-python setup.py build --force
-python setup.py sdist
-pip install -v dist/binarycpython-$VERSION_NUMBER.tar.gz
+# we can only use python3 and python3, but allow
+# the user to set these in environment variables
+# PYTHON and PIP.
+: "${PYTHON:="python3"}"
+: "${PIP:="pip3"}"
+
+# do stuff...
+$PYTHON setup.py clean
+$PIP uninstall binarycpython
+$PYTHON setup.py build --force
+$PYTHON setup.py sdist
+$PIP install -v dist/binarycpython-$VERSION_NUMBER.tar.gz