mate-document-viewer-1.6.1: Build system fail on newer libtool/autofoo

For some reason it fails at link with unstable autofoo/libtool. Running
euatoreconf for now.
mate-document-viewer-1.6.1: Fix zlib link failure

Fix bugs:
 https://github.com/Sabayon/mate-overlay/issues/46
https://bugs.gentoo.org/show_bug.cgi?id=480464
libmateweather-1.6.2: Version bump