Update BuildTools, CoreClr, ProjectNTfs, ProjectNTfsTestILC to prerelease-02120-03...
authordotnet-maestro-bot <dotnet-maestro-bot@microsoft.com>
Fri, 20 Oct 2017 13:33:13 +0000 (08:33 -0500)
committerStephen Toub <stoub@microsoft.com>
Fri, 20 Oct 2017 13:33:13 +0000 (09:33 -0400)
commit2fa6d9fb58bf1d2efc22ba1d3c0615f14b2931a3
treeab4894c6c839c15df6606655be741eff25f8306b
parent92d08bbdc93eb63406c619633da2e0118fc339b1
Update BuildTools, CoreClr, ProjectNTfs, ProjectNTfsTestILC to prerelease-02120-03, preview1-25820-01, beta-25820-00, beta-25820-00, respectively (dotnet/corefx#24736)

Commit migrated from https://github.com/dotnet/corefx/commit/c50a1672a82385a64eac84e34c197215a9ba37b0
src/libraries/BuildToolsVersion.txt
src/libraries/dependencies.props
src/libraries/external/test-runtime/optional.json