"select copper connection" doesn't always respect layer

[Chris Pavlina]

"Select copper connection" sees two tracks as connected if they are on the same net, share an endpoint, but are on different layers. A trivial board is attached to reproduce this - if you press I over either of the two tracks, both of them are selected, even though there is no copper connecting them together.

Considering SELECTION_TOOL::selectCopper pretty much just wraps RN_DATA::GetConnectedItems, this might actually lead to one of the remaining weird ratsnest bugs...

Application: pcbnew
Version: (2016-08-26 BZR 7097, Git 67230ac)-product, release build
Libraries: wxWidgets 3.0.2
           libcurl/7.50.1 OpenSSL/1.0.2h zlib/1.2.8 libidn/1.33 libssh2/1.7.0
Platform: Linux 4.6.4-1-ARCH x86_64, 64 bit, Little endian, wxGTK
- Build Info -
wxWidgets: 3.0.2 (wchar_t,wx containers,compatible with 2.8)
Boost: 1.60.0
Curl: 7.50.1
KiCad - Compiler: GCC 6.1.1 with C++ ABI 1010
        Settings: USE_WX_GRAPHICS_CONTEXT=OFF
                  USE_WX_OVERLAY=OFF
                  KICAD_SCRIPTING=ON
                  KICAD_SCRIPTING_MODULES=ON
                  KICAD_SCRIPTING_WXPYTHON=ON
                  USE_FP_LIB_TABLE=HARD_CODED_ON
                  BUILD_GITHUB_PLUGIN=ON

[Maciej Suminski (orsonmmz)]

It is fixed since the new connectivity algorithm has been merged.