[Buildroot] [PATCH 0 of 6 v2] Introduction of kconfig-package

[Thomas De Schampheleire <patrickdepinguin@gmail.com>]

This patch series introduces a kconfig-package infrastructure and already
converts the uclibc and busybox packages.

I believe this series is complete in the sense that it could be applied as
one whole, not yet including the conversion of linux and barebox.

In a subsequent series, linux and barebox can be converted to
kconfig-package too, but there will need to be some changes to
kconfig-package to support them.
One particular difference with uclibc/busybox is that linux/barebox use a
different method to copy the original config file: instead of simply copying
it to build_dir/.config, it is first copied to arch/.../buildroot_defconfig
and then 'make ... buildroot_defconfig' is called. I'm considering in adding
a FOO_KCONFIG_INSTALL_CONFIG_CMDS variable to support this, which defaults
to the simple copy used by busybox/uclibc, but can be overwritten
appropriately by linux and barebox.
Anyway, this part is not yet ready and will only be available for 2014.11.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>

---
Thomas De Schampheleire (6):
  infra: introduce a kconfig-package infrastructure
  manual: add documentation for kconfig-package
  uclibc: convert to kconfig-package infrastructure
  uclibc: only add targets if uclibc is enabled
  busybox: convert to kconfig-package infrastructure
  busybox: only add kconfig targets if uclibc is enabled


 docs/manual/adding-packages-kconfig.txt |  56 +++++++++++++++++
 docs/manual/adding-packages.txt         |   2 +
 package/Makefile.in                     |   1 +
 package/busybox/busybox.config          |  18 ++--
 package/busybox/busybox.mk              |  27 +++----
 package/pkg-kconfig.mk                  |  82 +++++++++++++++++++++++++
 package/uclibc/uclibc.mk                |  36 +++-------
 7 files changed, 173 insertions(+), 49 deletions(-)