Fixed dependence of xrDO_Light on xrCDB

In order to build successfully without running building twice, add depedency for xrDO_Light.
And for contributors, please, upgrade to VS 2013 Update 3.

src/engine.sln

@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2013
-VisualStudioVersion = 12.0.30324.0
+VisualStudioVersion = 12.0.30723.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "utils", "utils", "{89F6A7EE-3BBE-45D3-A8A8-5D9366CD987B}"
 EndProject
@@ -39,6 +39,9 @@ EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xrCompress", "utils\xrCompress\xrCompress.vcxproj", "{EF76867B-6EB8-4DC0-A1D6-E964FAD6FC7B}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xrDO_Light", "utils\xrDO_Light\xrDO_Light.vcxproj", "{B730F54D-1199-481A-AAD0-5DB684E067C0}"
+	ProjectSection(ProjectDependencies) = postProject
+		{A19B1DF2-82EC-4364-8BDF-85D13A1C89B5} = {A19B1DF2-82EC-4364-8BDF-85D13A1C89B5}
+	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "DXT", "utils\xrDXT\DXT.vcxproj", "{EBF9B543-0830-4866-9B48-DC0740E87E8A}"
 EndProject