[xmlunit/xmlunit.net] 52cec6: port and actually improve fix for xmlunit/#40

[GitHub <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/xmlunit/xmlunit.net
  Commit: 52cec690fbbeb63a40666e4eea427c7a9d9d905d
      https://github.com/xmlunit/xmlunit.net/commit/52cec690fbbeb63a40666e4eea427c7a9d9d905d
  Author: Stefan Bodewig <ste...@fr...>
  Date:   2015-12-12 (Sat, 12 Dec 2015)

  Changed paths:
    M RELEASE_NOTES.md
    A src/main/net-core/Diff/DefaultConditionalSelectorBuilder.cs
    M src/main/net-core/Diff/ElementSelectors.cs
    M src/main/net-core/XMLUnit.Core.csproj
    M src/tests/net-core/Diff/ElementSelectorsTest.cs

  Log Message:
  -----------
  port and actually improve fix for xmlunit/#40