ttf: introduce update-fonts bbclass and change all ttf recipes to use it

* without this ttf.inc had to set RRECOMMENDS and
  postinst/postrm without PN suffix to cover all
  subpackages created in ttf recipes

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
samba: Split libnss-winbind package

This allows for applications to resolv wins without the winbindd and
sambad.

Change-Id: Iaa86154a59e758b37f28796963e6550ed2d30464
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>