Merge pull request #1004 from yuriks/msvc-link-opt

Enable linker optimizations in MSVC Release builds

CMakeLists.txt

@@ -48,7 +48,7 @@ else()
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}" CACHE STRING "" FORCE)
 
     set(CMAKE_EXE_LINKER_FLAGS_DEBUG   "/DEBUG" CACHE STRING "" FORCE)
-    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/DEBUG" CACHE STRING "" FORCE)
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/DEBUG /INCREMENTAL:NO /OPT:REF,ICF" CACHE STRING "" FORCE)
 endif()
 
 add_definitions(-DSINGLETHREADED)