Fix QVM tool dependencies on Windows

cmake/platforms/windows.cmake

@@ -37,3 +37,8 @@ if(MSVC)
 endif()
 
 set(CLIENT_EXECUTABLE_OPTIONS WIN32)
+
+# It's only necessary to set this on Windows; elsewhere
+# CMAKE_EXECUTABLE_SUFFIX will be empty anyway, or we want
+# HOST_EXECUTABLE_SUFFIX to be empty for other reasons
+set(HOST_EXECUTABLE_SUFFIX ${CMAKE_EXECUTABLE_SUFFIX})