Add a missing include directory in vs2008

Author: s-yata

vs2008/libmarisa/libmarisa.vcproj

@@ -105,7 +105,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="2"
 				EnableIntrinsicFunctions="true"
-				AdditionalIncludeDirectories="../../lib"
+				AdditionalIncludeDirectories="../../lib;../../include"
 				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;MARISA_EXPORTS"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="true"