Correct distfile generation, and re-enable GConf schema installation.
The thumbnailer will not work without it. Since this should be temporary,
I did did not add build depends on the autotools, but basically, I did:
aclocal19 -I m4 -I /usr/local/share/aclocal
autoconf259 -I m4 -I /usr/local/share/aclocal
automake19
Then I diff'd the files that required modification for GConf to work.