* include/winbase.h (WINBASEAPI): Define as DECLSPEC_IMPORT only

if __W32API_USE_DLLIMPORT__ is defined.
	* include/winuser.h (WINUSERAPI): Likewise.

winsup/w32api/include/winbase.h

@@ -5,13 +5,13 @@
 #endif
 
 #ifndef WINBASEAPI
-#ifdef __INSIDE_CYGWIN__
-#define WINBASEAPI
-#else
+#ifdef __W32API_USE_DLLIMPORT__
 #define WINBASEAPI DECLSPEC_IMPORT
+#else
+#define WINBASEAPI
+#endif
 #endif
 
-#endif
 #ifdef __cplusplus
 extern "C" {
 #endif