Remove tar options not supported by busybox tar.

diff -u -r ../dpkg-1.17.10/dpkg-deb/extract.c ./dpkg-deb/extract.c
--- ../dpkg-1.17.10/dpkg-deb/extract.c	2014-06-04 02:02:54.000000000 +0200
+++ ./dpkg-deb/extract.c	2014-07-01 16:40:02.785848137 +0200
@@ -327,14 +327,20 @@
       else
         internerr("unknown or missing tar action '%d'", taroption);
 
+#ifndef __ANDROID__
+      /* busybox tar does not support this */
       if (taroption & DPKG_TAR_PERMS)
         command_add_arg(&cmd, "-p");
+#endif
       if (taroption & DPKG_TAR_NOMTIME)
         command_add_arg(&cmd, "-m");
 
       command_add_arg(&cmd, "-f");
       command_add_arg(&cmd, "-");
+#ifndef __ANDROID__
+      /* busybox tar does not support this */
       command_add_arg(&cmd, "--warning=no-timestamp");
+#endif
 
       m_dup2(p2[0],0);
       close(p2[0]);