Fixed syntax highlighting in Emacs.

Avoid "<<" which looks like a heredoc.
Workaround confirmed to work with y2makepot / rxgettext.
Dropped an unused client.

It was used in the "network" proposal in the 2nd stage, which was
dropped.

BTW it is still referenced in the control files in skelcd-control-*.rpm
Refactored 1 YCP artifact.

Made by Zombie Killer 3da20a12849a11fec63e726e0e4ac7ecbb93b598
https://github.com/yast/zombie-killer
Test the proxy return code test (bnc#853725, bnc#871945).
Fixed recognizing proxy test status codes (bnc#853725, bnc#871945).

It was a bug in the YCP-Ruby conversion, tracked as
https://github.com/yast/y2r/issues/49

  splitstring(proxy_ret_stderr, "\r?\n")

in
https://github.com/yast/yast-proxy/commit/e7a473781810cab2634b090f11bbb75e1c82272e#diff-d8c6a80680dddcd2eff6a8d842b09035L162
was translated to

  Builtins.splitstring(proxy_ret_stderr, " ?\n")

in
https://github.com/yast/yast-proxy/commit/e7a473781810cab2634b090f11bbb75e1c82272e#diff-97fbd995dea9b880ad69091150e5e9acR163

Note that the original code has a bug already: it intends to split on a
regexp, but in fact it splits on any of the 3 characters (as documented,
http://doc.opensuse.org/projects/YaST/openSUSE11.3/tdg/splitstring.html ).

That bug only triggers when the CR is replaced with a SPACE, splitting
"HTTP/1.1
200" and breaking the lookup of the HTTP status reply.
version + changelog
fixup Dropped an unused client
fixup Test the proxy return code test
Use only ASCII in test data as the tests may run without UTF-8.
Use expectations compatible with RSpec 2.14.
addressed review comments
Merge pull request #3 from yast/proxy-test-result

Fixed Test Proxy Settings always reporting failure
Merge branch 'SLE-12-GA'