Add support for limiting the optional Xenstore features via domain
configuration. This will be needed when adding features like limiting
the scope of Xenstore watch events.

This patch series is handling only the xl/libxl side, libxenstore and
C Xenstore (xenstored and xenstore-stubdom). Oxenstored is not covered.

Changes in V2:
- added Jason's Reviewed-by: tags
- a small fix of patch 4

Juergen Gross (7):
  tools/libs/store: add get- and set-feature related functions
  tools/xenstored: support specification of migration stream version
  tools/xenstored: add missing migration record definitions
  tools/xenstored: add server feature support
  tools/xenstored: support SET/GET_FEATURE commands
  tools/xl: add available Xenstore features to xl info output
  tools: allow to limit xenstore features via guest config

 docs/man/xl.cfg.5.pod.in             |  36 ++++++++
 tools/golang/xenlight/helpers.gen.go |   2 +
 tools/golang/xenlight/types.gen.go   |   1 +
 tools/include/libxl.h                |   6 ++
 tools/include/xenstore.h             |  13 +++
 tools/libs/light/libxl_dom.c         |  12 +++
 tools/libs/light/libxl_types.idl     |   1 +
 tools/libs/store/Makefile            |   2 +-
 tools/libs/store/libxenstore.map     |   6 ++
 tools/libs/store/xs.c                |  49 +++++++++++
 tools/xenstored/control.c            |   6 +-
 tools/xenstored/core.c               |   4 +
 tools/xenstored/domain.c             | 120 ++++++++++++++++++++++++++-
 tools/xenstored/domain.h             |  11 +++
 tools/xenstored/lu.c                 |  35 ++++++--
 tools/xenstored/lu.h                 |   3 +-
 tools/xenstored/xenstore_state.h     |  31 ++++++-
 tools/xl/Makefile                    |   3 +-
 tools/xl/xl_info.c                   |  22 +++++
 tools/xl/xl_parse.c                  |   3 +
 tools/xs-clients/xenstore_control.c  |  41 ++++++---
 21 files changed, 380 insertions(+), 27 deletions(-)

-- 
2.43.0