fix CYGWIN compilation

C/load_dl.c

@@ -46,8 +46,10 @@ Yap_LoadForeignFile(char *file, int flags)
     dlflag = RTLD_LAZY;
   if (flags &  GLOBAL_LOADING)
     dlflag |= RTLD_GLOBAL;
+#ifndef __CYGWIN__
   else 
     dlflag |= RTLD_LOCAL;
+#endif
   
   out = (void *)dlopen(file,dlflag);
   if (!out) {

configure

@@ -5100,6 +5100,7 @@ _ACEOF
 
 fi
 
+      EXTRA_LIBS_FOR_DLLS="\$(abs_top_builddir)/yap.dll"
     else
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lwsock32" >&5
 $as_echo_n "checking for main in -lwsock32... " >&6; }
@@ -7112,7 +7113,7 @@ fi
 	INSTALL_DLLS=""
 	DO_SECOND_LD=""
 	MERGE_DLL_OBJS=""
-	IN_UNIX="#"
+        IN_UNIX="#"
         YAPLIB_LD="\$(CC) -shared -Wl,--export-all-symbols"
         PRE_INSTALL_ENV=""
         INSTALL_ENV=""