ipe 7.1.6

Version bump, Modernisation of syntax, removes the patch in favour of flags to reflect recent upstream changes, patches the shared objects into dylibs.
I could probably draw up a patch for Ipe's dylib creation upstream, by wrapping the various aspects in "ifdef" blocks, but I'll take a look at that later tonight. For now, I've submitted issues for both major issues. Pushing the links in-formula now.