libneon links against libintl, which is provided by gettext, but doesn't depend on the gettext port.
It also has a couple other issues, but this one just bit me in the ass when I upgraded gettext, which apparently bumped libintl from libintl.3.dylib to libintl.8.dylib, and so broke some other installed ports. I upgraded all the ones that claimed dependency on gettext, but libneon still failed since it didn't claim this.
I have a quick-n-dirty change to the Portfile ready which adds gettext, libiconv, and zlib as library dependencies. Shall I go ahead and check it in?