Fixed busybox 1.9.1's umount to compile against dietlibc, which doesn't include getmntent_r()

base/busybox/dietlibc.patch

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../busybox/dietlibc.patch
-# Copyright (C) 2007 The OpenSDE Project
+# Copyright (C) 2007 - 2008 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -37,3 +37,23 @@
  
  char *pw_encrypt(const char *clear, const char *salt)
  {
+--- ./util-linux/umount.c.orig	2008-02-14 14:44:01.000000000 +0000
++++ ./util-linux/umount.c	2008-02-14 14:44:29.000000000 +0000
+@@ -21,6 +21,17 @@
+ #define OPT_REMOUNT             (1 << 4)
+ #define OPT_ALL                 (ENABLE_FEATURE_UMOUNT_ALL ? (1 << 5) : 0)
+ 
++#if defined(__dietlibc__)
++/* 16.12.2006, Sampo Kellomaki (sampo@iki.fi)
++ * dietlibc-0.30 does not have implementation of getmntent_r() */
++static struct mntent *getmntent_r(FILE* stream, struct mntent* result, char* buffer, int bufsize)
++{
++	struct mntent* ment = getmntent(stream);
++	memcpy(result, ment, sizeof(struct mntent));
++	return result;
++}
++#endif
++
+ int umount_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+ int umount_main(int argc, char **argv)
+ {