documentation: Makefile, dev-manual - edits to patching kernel

Made some general edits to the new "Patching the Kernel" section.
Also had to remove a couple of images no longer used in the section
from the Makefile "TARFILES" variable.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: dev-manual - Typo fixed.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - LICENSE_PATH not LICENSE_DIR.

Fixes [YOCTO_#3118]

LICENSE_PATH is the correct variable to use for 1.3 - see:

https://bugzilla.yoctoproject.org/show_bug.cgi?id=3118

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - Variable descriptions edited.

Adjust the descriptions so that it is clearer that these are specific
to a machine and should appear in the machine's .conf file, and are
intended to affect the image contents, not the dependencies of a
specific package. Also change the examples so that they demonstrate more
realistic usage scenarios for these variables.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - MACHINE definition extended.

Extend the description of the MACHINE variable so that it mentions that
this points to a .conf file under conf/machine.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - New PACKAGECONFIG glossary entry.

Add a description of the PACKAGECONFIG variable to the variable
glossary.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - DISTRO description extended.

Extend the description of the DISTRO variable so that it mentions that
this points to a .conf file under conf/distro and mentions what happens
if the value is left blank.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - New backfill variables and section.

Document DISTRO_FEATURES_BACKFILL and MACHINE_FEATURES_BACKFILL. We may
wish to expand upon this in future, but at least this explains what
these variables are for and how to use them.

Also add a link from the DISTRO_FEATURES entry to the section that lists
valid DISTRO_FEATURES items.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - Edits to fix default description

* Use correct/up-to-date names of package systems
* SUMMARY does not default to the value of DESCRIPTION, it's the other
  way around (although the logic may be improved in future so that this
  is the effect).

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - change support to opkg from ipkg

We haven't supported ipkg for some time now - it was replaced by opkg
(whilst still using the ipk package format).

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - wording changes

Some wording changes from "packages" to "recipe" as appropriate
in some of the variable glossary entries.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - Updates to the poky structure

* Add meta-yocto, meta-yocto-bsp and meta-hob
* Remove meta-rt - this was merged into OE-Core (meta)
* Remove meta-demoapps - this was dropped

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: dev-manual - Added license compliance section.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual - Updates to the BPN variable.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: poky-ref-manual, yocto-project-qs - supported distros

Created the new section in the reference manual that lists the
distributions that support YP.

Updated the section in the QS to reference the new section in
the reference manual.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: dev-manual - edits to the patching the kernel and model sections.

Made changes to try and clean up the process.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: dev-manual - edits to the license compliance section.

Implemented Beth Flanagan's review comments.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: dev-manual - edits to kernel section and compliance

* Edits to get the patching the kernel section more sane.

* A tweak to the opening sentence of the compliance section to
  rid it of the split-infinitives.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
documentation: kernel-manual - Fixed typo.

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>