Import patch from upstream bug report for xfce4-weather-plugin to
adapt to new upstream weather service API interface.

Previous API version is deprecated and expired by upstream.

While here, remove unneeded USES=intlhack.

PR: 236166
Submitted by: Olivier Duchateau <duchateau.olivier@gmail.com>
Obtained from: https://bugzilla.xfce.org/show_bug.cgi?id=14972
MFH: 2019Q1