wget useless requirement of lzip

[SaintBol]

In commit d7fd082d9e3ccc0a1366b3ad15ea8a7c832c9ed4, wget suddenly requires lzip instead of xz: -use_xz yes +use_lzip yes

This requirement triggers installation of lzip, which doesn't offer any advantage over xz (while xz is usually already installed since plenty of other stuff requires it). It appears (and it's easy to check, even while browsing macports tickets) that about nobody except its own author uses lzip (also author of ddrescue, which explains why ddrescue is lzip compressed). I suggest to revert to an xz compressed archive to avoid installing useless additional stuff.