fontconfig: Fix additional arguments
contents-runtime: Pull in fontconfig-utils
contents-devel: Add fontconfig-dev and freetype-dev
contents-runtime: Pull in libpng
contents-devel: Pull in libpng-dev
contents-runtime: Add libpcre
contents-devel: Add libpcre-dev
contents-{runtime,devel}: Move less to the runtime tree
contents-runtime: Add ruby to the runtime tree
contents-devel: Add ruby-dev instead of ruby
Drop ruby and use the one from meta-oe

We were using an old ruby recipe.
The meta-oe repository contains a recent version, and it's one recipe
less to maintain.
contents-runtime: Remove busybox
openssh: Drop systemd additions

Since we require meta-oe for ruby support let's use the meta-oe/meta-systemd
layer which provides systemd support itself.
maui-contents: Don't add pam_systemd.so to common-session

It's already done by meta-oe/meta-systemd's pam bbapennd.
mauidistro.conf: Set PREFERRED_PROVIDER for jpeg and jpeg-dev

Use libjpeg-turbo just like ArchLinux does.
ruby: Avoid tcl dependency

We are not going to ship an obsolete interpreter.
ruby: Update to 1.9.3-p429

Follow updates in our meta-oe fork.