msvc projects: add include paths and lib paths to compile without PCAP_DIR environment variable

ports/win32/msvc/lwIP_Test.vcxproj

@@ -74,7 +74,7 @@
     <Link>
       <AdditionalDependencies>Packet.lib;wpcap.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SuppressStartupBanner>true</SuppressStartupBanner>
-      <AdditionalLibraryDirectories>$(PCAP_DIR)\Lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(PCAP_DIR)\Lib;..\..\..\..\winpcap\WpdPack\Lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ProgramDatabaseFile>.\Release/test.pdb</ProgramDatabaseFile>
       <SubSystem>Console</SubSystem>
       <RandomizedBaseAddress>false</RandomizedBaseAddress>
@@ -114,7 +114,7 @@
     <Link>
       <AdditionalDependencies>Packet.lib;wpcap.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SuppressStartupBanner>true</SuppressStartupBanner>
-      <AdditionalLibraryDirectories>$(PCAP_DIR)\Lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(PCAP_DIR)\Lib;..\..\..\..\winpcap\WpdPack\Lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
       <RandomizedBaseAddress>false</RandomizedBaseAddress>

ports/win32/msvc/lwIP_pcapif.vcxproj

@@ -46,7 +46,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..\..\..\lwip\src\include;..\..\..\..\lwip\src\include\ipv4;..\..\..\..\lwip\src\include\ipv6;..\include;..;.\;$(PCAP_DIR)\Include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..\..\lwip\src\include;..\..\..\..\lwip\src\include\ipv4;..\..\..\..\lwip\src\include\ipv6;..\include;..;.\;$(PCAP_DIR)\Include;..\..\..\..\winpcap\WpdPack\Include\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_LIB;WIN32;_DEBUG;LWIP_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
@@ -69,7 +69,7 @@
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
-      <AdditionalIncludeDirectories>..\..\..\..\lwip\src\include;..\..\..\..\lwip\src\include\ipv4;..\..\..\..\lwip\src\include\ipv6;..\include;..;.\;$(PCAP_DIR)\Include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\..\..\lwip\src\include;..\..\..\..\lwip\src\include\ipv4;..\..\..\..\lwip\src\include\ipv6;..\include;..;.\;$(PCAP_DIR)\Include;..\..\..\..\winpcap\WpdPack\Include\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>

ports/win32/readme.txt

@@ -7,6 +7,8 @@ For both compilers:
 - the lwIP core repository must be in a folder "lwip" next to the "contrib" folder
 - you have to set an environment variable PCAP_DIR pointing to the WinPcap Developer's
   Pack (containing 'include' and 'lib')
+  alternatively, place the WinPcap Developer's pack next to the "lwip" and "contrib" folders:
+  "winpcap\WpdPack"
 
 You also will have to copy the file 'lwipcfg_msvc.h.example' to
 'lwipcfg_msvc.h' and modify to suit your needs (WinPcap adapter number,