Add include directories for boost-nowide (which only has a compiled component on Windows)

Author: lordofhyphens

src/CMakeLists.txt

@@ -499,6 +499,7 @@ IF (WIN32)
         add_definitions(-DBOOST_NOWIDE_NO_LIB)
     endif()    
     target_link_libraries(slic3r boost-nowide)
+    target_include_directories(boost-nowide PUBLIC ${COMMON_INCLUDES})
 
     # MinGW apparently has some multiple definitions of UUID-related items
     # deal with it.