Various updates for 2.4

Here are various updates that should be go into 2.4 branch:
1) remove a few unneeded recipes
2) update dnf/libdnf to latest upstream versions, which enables package feed signing
3) move libxml2 to Python 3
4) add an automated test for upstream version checks regressions, as I don't really want to keep fixing them by hand for other people. If you break it, autobuilder will complain.

The following changes since commit 7a0e795373653886452a7a2992ced10080711c26:

build-appliance-image: Update to master head revision (2017-04-21 08:22:18 +0100)

are available in the git repository at:

git://git.yoctoproject.org/poky-contrib akanavin/package-version-updates
http://git.yoctoproject.org/cgit.cgi/poky-contrib/log/?h=akanavin/package-version-updates

Alexander Kanavin (11):
libiconv: remove recipe
byacc: remove the recipe
libxml2: move python module to Python 3
libsolv: switch on ENABLE_COMPLEX_DEPS
libdnf: update to 0.8.1
dnf: update to 2.3.0
python3-pygpgme: remove the recipe
libunwind: update to 1.2
acpica: fix upstream version check
python3-iniparse: fix upstream version check
oe-selftest: add a test for upstream version check regressions

 meta-selftest/files/distrodata/checkpkg_exceptions |   27 +
 meta/lib/oeqa/selftest/distrodata.py               |   41 +
 meta/recipes-core/libxml/libxml2_2.9.4.bb          |    8 +-
 ...er-check-of-releasever-when-using-install.patch |  105 +
 meta/recipes-devtools/dnf/dnf_git.bb               |    9 +-
 ...ers-for-both-libsolv-and-libsolvext-libdn.patch |   13 +-
 ...-variables-with-pkg-config-cmake-s-own-mo.patch |   15 +-
 meta/recipes-devtools/libdnf/libdnf_git.bb         |    4 +-
 .../python/python3-iniparse_0.4.bb                 |    1 +
 .../recipes-devtools/python/python3-pygpgme_0.3.bb |   18 -
 meta/recipes-extended/acpica/acpica_20150515.bb    |    1 +
 meta/recipes-extended/acpica/acpitests_20140828.bb |    1 +
 meta/recipes-extended/byacc/byacc.inc              |   22 -
 .../0001-byacc-do-not-reorder-CC-and-CFLAGS.patch  |  161 -
 meta/recipes-extended/byacc/byacc/byacc-open.patch |   25 -
 meta/recipes-extended/byacc/byacc_20161202.bb      |   12 -
 meta/recipes-extended/libsolv/libsolv_0.6.26.bb    |    2 +-
 .../packagegroup-core-full-cmdline.bb              |    1 -
 .../libiconv-1.14/add-relocatable-module.patch     | 5008 --------------------
 .../libiconv/libiconv-1.14/autoconf.patch          |   50 -
 meta/recipes-support/libiconv/libiconv_1.14.bb     |   51 -
 meta/recipes-support/libunwind/libunwind.inc       |    2 +-
 .../{libunwind_git.bb => libunwind_1.2.bb}         |    9 +-
 23 files changed, 207 insertions(+), 5379 deletions(-)
 create mode 100644 meta-selftest/files/distrodata/checkpkg_exceptions
 create mode 100644 meta/lib/oeqa/selftest/distrodata.py
 create mode 100644 meta/recipes-devtools/dnf/dnf/0001-Revert-proper-check-of-releasever-when-using-install.patch
 delete mode 100644 meta/recipes-devtools/python/python3-pygpgme_0.3.bb
 delete mode 100644 meta/recipes-extended/byacc/byacc.inc
 delete mode 100644 meta/recipes-extended/byacc/byacc/0001-byacc-do-not-reorder-CC-and-CFLAGS.patch
 delete mode 100644 meta/recipes-extended/byacc/byacc/byacc-open.patch
 delete mode 100644 meta/recipes-extended/byacc/byacc_20161202.bb
 delete mode 100644 meta/recipes-support/libiconv/libiconv-1.14/add-relocatable-module.patch
 delete mode 100644 meta/recipes-support/libiconv/libiconv-1.14/autoconf.patch
 delete mode 100644 meta/recipes-support/libiconv/libiconv_1.14.bb
 rename meta/recipes-support/libunwind/{libunwind_git.bb => libunwind_1.2.bb} (81%)

2.11.0