comple package sdl with --disable-stdio-redirect

For discussion around this change, see:
http://lists.nongnu.org/archive/html/mingw-cross-env-list/2010-11/msg00014.html

src/sdl.mk

@@ -27,7 +27,8 @@ define $(PKG)_BUILD
         --disable-debug \
         --prefix='$(PREFIX)/$(TARGET)' \
         --enable-threads \
-        --enable-directx
+        --enable-directx \
+        --disable-stdio-redirect
     $(MAKE) -C '$(1)' -j '$(JOBS)' bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
     $(MAKE) -C '$(1)' -j 1 install bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
     ln -sf $(PREFIX)/$(TARGET)/bin/sdl-config $(PREFIX)/bin/$(TARGET)-sdl-config