Pidgin2.10.7, libotr4, pidgin-otr4, gtkspell2, nmap with Zenmap python GUI

First, added pidgin 2.10.7 (with finch and spellcheck). Updated libotr.rb to version for. Added pidgin-otr plugin and gtkspell.

Added a new nmap-zenmap.rb which allows one to install nmap with the python zenmap gui. I put this in a different rb as it requires a patch:

This involved a patch to Zenmap.App.py. I was getting errors that it could not load the gtk module. According to the pygtk tutorials and local tests the method for getting the gtk instance requires first importing pygtk, enforcing a gtk version (I'm using gtk2.0 as this is the default for homebrew) and then loading gtk.