Compatibility fixes:

grep: support -z
find: support --mindepth
  together +45 bytes
cpio: support -p (configurable, +230 bytes)
libbb: tweaks for cpio

diff --git a/TODO_config_nommu b/TODO_config_nommu
index 428d9b3..2061bfd 100644
--- a/TODO_config_nommu
+++ b/TODO_config_nommu
@@ -110,6 +110,7 @@
 CONFIG_BZIP2=y
 CONFIG_CPIO=y
 CONFIG_FEATURE_CPIO_O=y
+CONFIG_FEATURE_CPIO_P=y
 CONFIG_DPKG=y
 CONFIG_DPKG_DEB=y
 CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY=y