git-logdiff: Use --format=raw instead of --format=fuller

--format=fuller doesn't list the tree hash. Also remove --date=iso as it
has no effect when --format=raw is used.

b82db916-8e13-11e3-8326-001f3b596ec9
youtube-dl: Updated to version 2014.02.04.1

1603742e-8e85-11e3-8948-fefdb24f8e10
build-git: push_changes(): Add ubstud

Ubuntu Studio 13.10 for those wondering what that is.

916e518a-92a2-11e3-be0e-001f3b596ec9