Add mdnsresponder port

ports/mdnsresponder/CONTROL

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+Source: mdnsresponder
+Version: 765.30.11
+Description: The mDNSResponder project is a component of Bonjour, Apple's ease-of-use IP networking initiative: <http://developer.apple.com/bonjour/>

ports/mdnsresponder/portfile.cmake

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+include(vcpkg_common_functions)
+set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/mDNSResponder-765.30.11)
+vcpkg_download_distfile(ARCHIVE_FILE
+  URLS https://opensource.apple.com/tarballs/mDNSResponder/mDNSResponder-765.30.11.tar.gz
+  FILENAME mDNSResponder-765.30.11.tar.gz
+  SHA512 dfdea663ec1089058c2225ede13d70241dfec8311ff7fb8d29c8d386f5077a4104455d78f8777496cce96b8ff289b73ed1aec2bf65c52154b866fc1b7675ef90
+)
+vcpkg_extract_source_archive(${ARCHIVE_FILE})
+
+IF (TRIPLET_SYSTEM_ARCH MATCHES "x86")
+  SET(BUILD_ARCH "Win32")
+ELSEIF(TRIPLET_SYSTEM_ARCH MATCHES "arm")
+  MESSAGE(FATAL_ERROR " ARM is currently not supported.")
+ELSE()
+  SET(BUILD_ARCH ${TRIPLET_SYSTEM_ARCH})
+ENDIF()
+
+function(FIX_VCXPROJ VCXPROJ_PATH)
+  file(READ ${VCXPROJ_PATH} ORIG)
+  if (VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
+    string(REPLACE
+      "<ConfigurationType>StaticLibrary</ConfigurationType>"
+      "<ConfigurationType>DynamicLibrary</ConfigurationType>"
+      ORIG "${ORIG}")
+    string(REGEX REPLACE
+      "<RuntimeLibrary>*</RuntimeLibrary>"
+      "<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>"
+      ORIG "${ORIG}")
+    string(REGEX REPLACE
+      "<RuntimeLibrary>*</RuntimeLibrary>"
+      "<RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>"
+      ORIG "${ORIG}")
+  else()
+    string(REPLACE
+      "<ConfigurationType>DynamicLibrary</ConfigurationType>"
+      "<ConfigurationType>StaticLibrary</ConfigurationType>"
+      ORIG "${ORIG}")
+    string(REGEX REPLACE
+      "<RuntimeLibrary>*Debug</RuntimeLibrary>"
+      "<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>"
+      ORIG "${ORIG}")
+    string(REGEX REPLACE
+      "<RuntimeLibrary>*</RuntimeLibrary>"
+      "<RuntimeLibrary>MultiThreaded</RuntimeLibrary>"
+      ORIG "${ORIG}")
+  endif()
+  file(WRITE ${VCXPROJ_PATH} "${ORIG}")
+endfunction()
+
+FIX_VCXPROJ(${SOURCE_PATH}/mDNSWindows/DLL/dnssd.vcxproj)
+FIX_VCXPROJ(${SOURCE_PATH}/Clients/DNS-SD.VisualStudio/dns-sd.vcxproj)
+
+vcpkg_build_msbuild(
+  PROJECT_PATH ${SOURCE_PATH}/mDNSResponder.sln
+  PLATFORM ${BUILD_ARCH}
+  TARGET dns-sd
+)
+
+if (VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
+  file(INSTALL
+    ${SOURCE_PATH}/mDNSWindows/DLL/${BUILD_ARCH}/Release/dnssd.dll
+    DESTINATION ${CURRENT_PACKAGES_DIR}/bin
+  )
+  file(INSTALL
+    ${SOURCE_PATH}/mDNSWindows/DLL/${BUILD_ARCH}/Debug/dnssd.dll
+    DESTINATION ${CURRENT_PACKAGES_DIR}/debug/bin
+  )
+endif()
+file(INSTALL
+  ${SOURCE_PATH}/mDNSWindows/DLL/${BUILD_ARCH}/Release/dnssd.lib
+  DESTINATION ${CURRENT_PACKAGES_DIR}/lib
+)
+file(INSTALL
+  ${SOURCE_PATH}/mDNSWindows/DLL/${BUILD_ARCH}/Debug/dnssd.lib
+  DESTINATION ${CURRENT_PACKAGES_DIR}/debug/lib
+)
+file(INSTALL
+  ${SOURCE_PATH}/mDNSShared/dns_sd.h
+  DESTINATION ${CURRENT_PACKAGES_DIR}/include
+)
+file(INSTALL
+  ${SOURCE_PATH}/LICENSE
+  DESTINATION ${CURRENT_PACKAGES_DIR}/share/mdnsresponder/copyright
+)
+vcpkg_copy_pdbs()