recipes: conform to OE packaging guidelines with RDEPENDS/RRECOMMENDS

recipes: conform to OE packaging guidelines with RDEPENDS/RRECOMMENDS

* there is probably very few cases when it's needed without _${PN},
  if you find one in attached patch, please enlighten me
* usually we want those only for ${PN} not for all ${PACKAGES} ie ${PN}-dev, ${PN)-doc etc
* there is a check for this in recipe-sanity.bclass
* there is maybe few possible fixes also in bbclasses
  cpan-base.bbclass:RDEPENDS  += "${@["perl", ""][(bb.data.inherits_class('native', d))]}"
  distutils-base.bbclass:RDEPENDS += "python-core"
  gtk-icon-cache.bbclass:RDEPENDS += "hicolor-icon-theme"
  image.bbclass:RDEPENDS += "${IMAGE_INSTALL} ${IMAGE_BOOT}"
  module.bbclass:RDEPENDS += "kernel (${KERNEL_VERSION}) update-modules"
  ?opie_i18n.bbclass:      rdepends =  bb.data.getVar("RDEPENDS", d, 1)
  ?opie_i18n.bbclass:                      bb.data.setVar('RDEPENDS_%s' % x[0].lower(), pn, d)
  ?opie_i18n.bbclass:              bb.data.setVar('RDEPENDS', rdepends, d)
  rubyextension.bbclass:RDEPENDS += "ruby"

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Acked-by: Koen Kooi <k-kooi@ti.com>