Make CPC version run from ROM

This frees up an extra 11K of RAM for apps.

It is still slightly broken: glitches during start of the ROM, and the
desktop icons are somehow missing. I don't know why yet...
diff --git a/contiki-cpc/apps/configedit.c b/contiki-cpc/apps/configedit.c
index ec672f4..f3bb605 100644
--- a/contiki-cpc/apps/configedit.c
+++ b/contiki-cpc/apps/configedit.c
@@ -341,7 +341,7 @@
   
   f = cfs_open("@:config.cfg", CFS_WRITE);
   if(f == -1) {
-    log_message("Could not open config.cfg", "");
+    //log_message("Could not open config.cfg", "");
     return;
   }
   if(cfs[0] != 0) {