erlang: Update to OTP R16B01

Also adds `--with-fop`to build pdf docs and `--with-wxmac` to enable
wxwidgets support (currently disabled because of crashing issues)
aswell as two 10.9 build fixes.

It would be nice to have the new release, because other formulas like elixir depend on it and are currently doing some [ugly stuff](https://github.com/mxcl/homebrew/blob/master/Library/Formula/elixir.rb) to ensure R16 is available.

It seems that the previous release R16B was reverted, so it would be interesting to know with the issues with it were and if those have been fixed in R16B01. There are definitely issues with wxWidgets support causing segfaults (try `wx:demo().` in `erl`), which is why I've left it disabled.

About the Mavericks dependency on unixodbc: The 10.9 SDK no longer includes iodbc which it would use in the past and I found this cleaner than linking against 10.8 SDK.