• Fix python 3 support

While rpm does support python3, the port does not configure with
python 3 because it tries to detect incorrect python library
(-lpython3.6, while it should be -lpython3.6m, where m is some kind
of python abi flags). Shove python version with ABI flag added
through, which fixes build.

I've looked at rpm4 git master and it seems that they have changed
the python detection there, so newer versions of rpm4 may no longer
need this hack.

• Update WWW

Approved by: portmgr blanket