manual: fix cross-refs

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v2:
* squash patches 1/11 and 4/11 together (Arnout)

Changes since v1:
* simplify cross-ref (Arnout)
manual: minor fix in patch-policy.txt

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v2:
* mention patch apply order and how to force this order (Thomas P.)
manual: misc. post-{build,image} scripts fixes

* update post-build scripts mechanism that now support several scripts
* fix formatting

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v1:
* rewording and formatting fixes (Arnout)
support: add kconfiglib python module

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v2:
* move kconfiglib in support/script (Arnout)
* remove the license part in the readme since it is currently undefined
  (the author of the kconfiglib has been contacted for further details)
support/scripts: add gen-manual-lists.py

Script generating the target and host package tables, and the deprecated
stuff list as well. These tables and lists are generated parsing the
Config.in files.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v1:
* many improvements, fixes, refactoring and cleanup (Arnout)
manual: add a make target 'manual-update-lists'

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v2:
* remove PYTHONPATH stuff since the kconfiglib module is next to
  gen-manual-lists.py (Arnout)

Changes since v1:
* add manual-update-lists target to the .PHONY one (Arnout)
* misc. fixes/updates
manual: cleanup appendix.txt

Signed-off-by: Samuel Martin <s.martin49@gmail.com>

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Changes since v1:
* move the surrounding text of the list back in appendix.txt (Arnout)
Makefile: add to the release target a warning about the manual updates.

The manual-update-lists target is not added to the dependencies of the
release target to allow editing the generated files.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
manual: update generated lists

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Manual: add empty line after header in .mk files

Signed-off-by: Stephan Hoffmann <sho@relinux.de>
Acked-by: Samuel Martin <s.martin49@gmail.com>

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[Samuel: fix typo in commit message]