Increased contrast in 16x16 application-rss+xml.
3.6.2
Use python3 syntax

- patch by Matthias Clasen from https://bugzilla.gnome.org/show_bug.cgi?id=690363
Port to python3 and sync from gnome-icon-theme.

The script runs fine on python3 now. This also adds features
that were done in gnome-icon-theme but were not copied over.
ssd added, need to be named still.
drive-harddisk-solidstate and drive-harddisk-system-solidstate added.
make ssds thinner
build: "render" target not called - adding to "all".

https://bugzilla.gnome.org/show_bug.cgi?id=692183