Added following variables for PR service:

USE_PR_SERV: flag of whether to use the network PR service
PRAUTOINX: search index for the network PR service
PKGE/PKGV/PKGR: epoch, version and revision used in package feed.
EXTENDPKGV: full package version string used in package relationships.

For the following recipes, replace EXTENDPV with EXTENDPKGV:

udev, xcb, xorg-proto, util-macros and linux-libc-headers

then removed the unused EXTENDPV and EXTENDPEVER variables

Users should use EXTENDPKGV instead for package feed generation.

Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

In mirrors.bbclass we point into /pub but we don't in bitbake.conf.
All uses of KERNELORG_MIRROR look into /pub anyhow, so lets make
use of that.

Signed-off-by: Tom Rini <tom_rini@mentor.com>

Correct a typo in LIC_FILES_CHKSUM for linux-libc-headers as well as update
the md5sum.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>

Having one monolithic packages directory makes it hard to find things
and is generally overwhelming. This commit splits it into several
logical sections roughly based on function, recipes.txt gives more
information about the classifications used.

The opportunity is also used to switch from "packages" to "recipes"
as used in OpenEmbedded as the term "packages" can be confusing to
people and has many different meanings.

Not all recipes have been classified yet, this is just a first pass
at separating things out. Some packages are moved to meta-extras as
they're no longer actively used or maintained.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>