FETCH_USER = curl fails to build curl

[matthew sporleder <msporleder%gmail.com@localhost>]

It looks like a fallback to ftp when updating curl *almost* works:

ftp   --fail --insecure --location --remote-time       -o
curl-7.52.1.tar.bz2
ftp://ftp.fr.NetBSD.org/pub/pkgsrc/distfiles/curl-7.52.1.tar.bz2 -O
ftp: unknown option -- -

But it is sticking curl options onto ftp.

Thanks,
Matt