Visual Studio Projects: Improve search for Harfbuzz headers

Look in the include/harfbuzz directory that is under the pre-defined prefix
directory, as Pango 1.44.x and later pulled in HarfBuzz headers for all builds

win32/config-msvc.mak.in

@@ -56,6 +56,7 @@ GTK_PREPROCESSOR_FLAGS =	\
 	 /I$(PREFIX)\include\gdk-pixbuf-2.0	\
 	 /I$(PREFIX)\include\pango-1.0	\
 	 /I$(PREFIX)\include\atk-1.0	\
+	 /I$(PREFIX)\include\harfbuzz	\
 	 /I$(PREFIX)\include\cairo	\
 	 /I$(PREFIX)\include\gio-win32-2.0	\
 	 /I$(PREFIX)\include\glib-2.0	\

win32/vs10/gtk3-build-defines.props

@@ -26,7 +26,7 @@ nmake -f gtk-introspection-msvc.mak CFG=$(Configuration) PREFIX=$(GlibEtcInstall
   </PropertyGroup>
   <ItemDefinitionGroup>
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..;$(GlibEtcInstallRoot)\include\gdk-pixbuf-2.0;$(GlibEtcInstallRoot)\include\pango-1.0;$(GlibEtcInstallRoot)\include\atk-1.0;$(GlibEtcInstallRoot)\include\cairo;$(GlibEtcInstallRoot)\include\gio-win32-2.0;$(GlibEtcInstallRoot)\include\glib-2.0;$(GlibEtcInstallRoot)\lib\glib-2.0\include;$(GlibEtcInstallRoot)\include\fribidi;$(GlibEtcInstallRoot)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;$(GlibEtcInstallRoot)\include\gdk-pixbuf-2.0;$(GlibEtcInstallRoot)\include\pango-1.0;$(GlibEtcInstallRoot)\include\harfbuzz;$(GlibEtcInstallRoot)\include\atk-1.0;$(GlibEtcInstallRoot)\include\cairo;$(GlibEtcInstallRoot)\include\gio-win32-2.0;$(GlibEtcInstallRoot)\include\glib-2.0;$(GlibEtcInstallRoot)\lib\glib-2.0\include;$(GlibEtcInstallRoot)\include\fribidi;$(GlibEtcInstallRoot)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>HAVE_CONFIG_H;G_ENABLE_DEBUG;G_DISABLE_SINGLE_INCLUDES;ATK_DISABLE_SINGLE_INCLUDES;GDK_PIXBUF_DISABLE_SINGLE_INCLUDES;GTK_DISABLE_SINGLE_INCLUDES;_USE_MATH_DEFINES;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ForcedIncludeFiles>msvc_recommended_pragmas.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>

win32/vs9/gtk3-build-defines.vsprops

@@ -9,7 +9,7 @@
 	>
 	<Tool
 		Name="VCCLCompilerTool"
-		AdditionalIncludeDirectories="..\..;$(GlibEtcInstallRoot)\include\gdk-pixbuf-2.0;$(GlibEtcInstallRoot)\include\pango-1.0;$(GlibEtcInstallRoot)\include\atk-1.0;$(GlibEtcInstallRoot)\include\cairo;$(GlibEtcInstallRoot)\include\gio-win32-2.0;$(GlibEtcInstallRoot)\include\glib-2.0;$(GlibEtcInstallRoot)\lib\glib-2.0\include;$(GlibEtcInstallRoot)\include\fribidi;$(GlibEtcInstallRoot)\include"
+		AdditionalIncludeDirectories="..\..;$(GlibEtcInstallRoot)\include\gdk-pixbuf-2.0;$(GlibEtcInstallRoot)\include\pango-1.0;$(GlibEtcInstallRoot)\include\harfbuzz;$(GlibEtcInstallRoot)\include\atk-1.0;$(GlibEtcInstallRoot)\include\cairo;$(GlibEtcInstallRoot)\include\gio-win32-2.0;$(GlibEtcInstallRoot)\include\glib-2.0;$(GlibEtcInstallRoot)\lib\glib-2.0\include;$(GlibEtcInstallRoot)\include\fribidi;$(GlibEtcInstallRoot)\include"
 		PreprocessorDefinitions="HAVE_CONFIG_H;G_ENABLE_DEBUG;G_DISABLE_SINGLE_INCLUDES;ATK_DISABLE_SINGLE_INCLUDES;GDK_PIXBUF_DISABLE_SINGLE_INCLUDES;GTK_DISABLE_SINGLE_INCLUDES;_USE_MATH_DEFINES"
 		ForcedIncludeFiles="msvc_recommended_pragmas.h"
 		AdditionalOptions="/MP"