buildroot

Mark a number of development related packages as deprecated

automake, autoconf, libtool and make on the target are basically
useless if we don't support building a toolchain on the target. Of
course, the host variant of automake, autoconf and libtool will remain
available.

[Peter: fixup to apply after perl change]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>