add x_preset.c and x_magicglass.c back to makefile.mingw-- they were...

add x_preset.c and x_magicglass.c back to makefile.mingw-- they were accidentally removed in the big Vanilla backport

pd/src/makefile.mingw

@@ -122,7 +122,7 @@ SRC = g_canvas.c g_graph.c g_text.c g_rtext.c g_array.c g_template.c g_io.c \
     x_midi.c x_misc.c x_time.c x_acoustics.c x_net.c x_text.c x_gui.c \
     x_list.c x_array.c d_soundfile.c g_slider.c import.c \
     x_scalar.c x_vexp.c x_vexp_if.c x_vexp_fun.c \
-    g_undo.c s_utf8.c
+    g_undo.c s_utf8.c x_preset.c g_magicglass.c
 
 SRSRC = u_pdsend.c u_pdreceive.c