The following functions where part of the experimental ID-WSF support
recently removed but where incorrectly included in the official ABI, so we
restore dummy versions of them (they do nothing or return NULL):
- lasso_get_prefix_for_dst_service_href
- lasso_get_prefix_for_idwsf2_dst_service_href
- lasso_register_dst_service
- lasso_register_idwsf2_dst_service
debian/rules supposed that lasso Makefile would always prefer python2 to
python3, it's not the case anymore. Also recent python3 improvements to
bindings scripts did not work with python 3.5 on jessie (on jessie/3.5
default open() encoding is still ASCII not UTF-8 as with the default
UTF-8 of later python3 versions).