Update BuildTools, ProjectNTfs, ProjectNTfsTestILC to prerelease-02126-01, beta-25826...
authordotnet-maestro-bot <dotnet-maestro-bot@microsoft.com>
Thu, 26 Oct 2017 13:39:25 +0000 (06:39 -0700)
committerdotnet-maestro-bot <dotnet-maestro-bot@microsoft.com>
Thu, 26 Oct 2017 13:39:25 +0000 (06:39 -0700)
commita885139690f98d6dac86f643f7c1b327058df420
tree0b5ce5ffdeead6a948691fc793bf6216c80594ea
parente07740fd01a00d4089836acd47aba026b4b415de
Update BuildTools, ProjectNTfs, ProjectNTfsTestILC to prerelease-02126-01, beta-25826-00, beta-25826-00, respectively

Commit migrated from https://github.com/dotnet/corefx/commit/0fd2fa29e3fe652e239e741daeecc7b7c867a872
src/libraries/BuildToolsVersion.txt
src/libraries/dependencies.props
src/libraries/external/test-runtime/optional.json