Merge pull request dotnet/coreclr#9915 from BruceForstall/IncBuild1
authorBruce Forstall <brucefo@microsoft.com>
Fri, 3 Mar 2017 02:10:39 +0000 (18:10 -0800)
committerGitHub <noreply@github.com>
Fri, 3 Mar 2017 02:10:39 +0000 (18:10 -0800)
Fix AsmConstants.inc to be incrementally rebuilt as necessary

Commit migrated from https://github.com/dotnet/coreclr/commit/53bebb112d7f254b001c24d35755bac4e7059a0e


Trivial merge