[OE-core] [PATCH 0/3] combo-layer import with history

[Patrick Ohly]

In Ostro OS we recently struggled with importing repositories that had
non-linear histories and duplicated patches; traditional "combo-layer
update" fails to import those because it cannot flatten the upstream
changes into a linear set of patches.

This enhanced combo-layer can deal with that by completely
re-implementing the update action such that it copies file trees
around instead of patches.

This adds basically another code path. It could also be maintained
separately, but as it might also be of interest to others, adding this
to OE-core is probably better, even though it makes the code more
complicated.

Probably some serious refactoring is due at some point, but that
should better be done only after defining some good test cases.

The following changes since commit 1a0e56630c5c27d8899dd0979ae0b86bbe227881:

  utils.bbclass: note for deprecated base_contains (2016-04-29 07:53:58 +0100)

are available in the git repository at:

  git://github.com/pohly/openembedded-core combo-layer-update-history
  https://github.com/pohly/openembedded-core/tree/combo-layer-update-history

Patrick Ohly (3):
  combo-layer: dummy "update with history"
  combo-layer: runcmd() enhancements
  combo-layer: implement "update with history"

 scripts/combo-layer | 475 +++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 449 insertions(+), 26 deletions(-)

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2.1.4