[oe] Use of github /archive/ tarballs in SRC_URI

[Burton, Ross]

Hi,

Some people have insisted for a long time that the dynamically generated
/archive/ tarballs at github cannot be trusted for long-term stability, as
they are generated using git-archive.  Others said that git-archive takes
measures to ensure the files are identical, and basic testing does indeed
show that.  Personally I was on the fence: a dynamically generated tarball
that is cached *could* change, but the git-archive generates the same file
list and the tools are stable.

Then the tarball for one of Erlang's repositories changed, and was noticed
by the checksum in the recipe (thanks Gunnar Andersson for reporting
this).  The extracted contents are identical, but the tarball itself has
changed.  I'm presuming this is due to the old tarball expiring in their
cache, and a newly generated tarball using a later version of tar.

So we now have documented evidence that this can and does happen, and it's
quite frustrating when this happens.  So, I suggest that use of github.com
/archive/ URLs be considered a bad practise for the primary SRC_URI tarball.

I'm working my way through the recipes in oe-core that use /archive/ and
replacing them with either maintainer-generated tarballs or git clones, but
there are a number of recipes in meta-oe which could do with fixing:

$ git grep -l -E github\\.com/.*/archive/
meta-initramfs/recipes-devtools/grubby/grubby_8.40.bb
meta-multimedia/recipes-support/gst-instruments/gst-instruments_0.2.3.bb
meta-multimedia/recipes-support/libsrtp/libsrtp_1.5.2.bb
meta-networking/recipes-support/geoip/geoip-perl_1.50.bb
meta-oe/recipes-connectivity/libuv/libuv_1.11.0.bb
meta-oe/recipes-connectivity/libwebsockets/libwebsockets_2.1.0.bb
meta-oe/recipes-devtools/protobuf/protobuf-c_1.2.1.bb
meta-oe/recipes-devtools/python/python-cpuset_1.5.7.bb
meta-oe/recipes-extended/boinc/boinc-client_7.6.33.bb
meta-oe/recipes-graphics/libvncserver/libvncserver_0.9.11.bb
meta-oe/recipes-graphics/openjpeg/openjpeg_2.1.1.bb
meta-oe/recipes-kernel/crash/crash_7.1.9.bb
meta-oe/recipes-multimedia/mplayer/mpv_0.24.0.bb
meta-oe/recipes-support/hunspell/hunspell_1.6.1.bb
meta-oe/recipes-support/lm_sensors/lmsensors_3.4.0.bb
meta-oe/recipes-test/gtest/gtest_1.8.0.bb
meta-perl/recipes-perl/libmodule/libmodule-pluggable-perl_5.2.bb
meta-perl/recipes-perl/libmodule/libmodule-runtime-perl_0.015.bb

Ross