Rename files for correctness on case-sensitive file systems

Author: sharwell

StyleCop.Analyzers/Directory.build.props StyleCop.Analyzers/Directory.Build.propsStyleCop.Analyzers/Directory.build.props renamed to StyleCop.Analyzers/Directory.Build.props

@@ -27,8 +27,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "build", "build", "{A0840AD0
 	ProjectSection(SolutionItems) = preProject
 		build\build.ps1 = build\build.ps1
 		build\check-key.ps1 = build\check-key.ps1
-		StyleCop.Analyzers\Directory.build.props = StyleCop.Analyzers\Directory.build.props
-		StyleCop.Analyzers\Directory.build.targets = StyleCop.Analyzers\Directory.build.targets
+		StyleCop.Analyzers\Directory.Build.props = StyleCop.Analyzers\Directory.Build.props
+		StyleCop.Analyzers\Directory.Build.targets = StyleCop.Analyzers\Directory.Build.targets
 		build\keys.ps1 = build\keys.ps1
 		build\opencover-report.ps1 = build\opencover-report.ps1
 		build\push.ps1 = build\push.ps1