tests: Bump timeouts

Reported by debian maintainers that it helps to pass thests on Hurd.

Signed-off-by: Jens Georg <mail@jensge.org>
build: Remove INSTALL

Signed-off-by: Jens Georg <mail@jensge.org>
build: Fix make distcheck

Signed-off-by: Jens Georg <mail@jensge.org>