Fix mkyaffs2image in the case where the directory tree already
holds a /dev entry.  Previous to this fix we would try to add /dev from
the device_table_min.txt file, and as its already in the rootfs,
then a hard link from ./dev to ./dev would be created in the FS.

Fix is to notice that process_directory calls dev_table_set_parent(),
and as the entry already exits, then we can skip the entry...

Note, this has been there for a while, but has been hidden due to /dev being
a mount point for udev so it didn't become apparent until testing where the
rootfs.yaffs2 was burned/mounted and then a find showed
"fine: /mnt/fs/dev/dev/dev/dev/dev/dev/dev/dev/.... too many open files"


diff --exclude CVS -uNr mkyaffs2image-20090406/dev_table.c mkyaffs2image-20090406.modified/dev_table.c
--- mkyaffs2image-20090406/dev_table.c	2009-09-08 14:03:52.000000000 -0400
+++ mkyaffs2image-20090406.modified/dev_table.c	2009-09-08 13:48:35.000000000 -0400
@@ -51,6 +51,7 @@
   struct deventry *child;       // children
   struct deventry *next;        // next at this level
   struct deventry *parent_next; // next at parent level
+  int skip;			// !0 if entry is to be skipped
 };
 
 struct deventry *root;
@@ -212,6 +213,7 @@
     if (progress)
       printf("%s: path %s parentId %d\n", __FUNCTION__, path, parentId);
     p->parentId = parentId;
+    p->skip = 1;  // as we already have the object, no need to create it again
   }
 }
 
@@ -223,7 +225,7 @@
   char name[128];
   p = root;
   while (p) {
-    if (!p->dumped) {
+    if (!p->dumped && !p->skip) {
       strcpy(d.d_name, p->name);
       sprintf(name, "%s%s", in_file, p->full_name);
       process_entry(&d, p->parentId, name);