cpio: internalize archive_xread_all_eof. add a few paranoia checks
 for corrupted cpio files.
modprobe-small: remove stray include
route: small code shrink

function                                             old     new   delta
get_header_cpio                                      958     980     +22
archive_xread_all_eof                                 33       -     -33
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 22/-33)            Total: -11 bytes

diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c
index e9c730d..7e3c482 100644
--- a/archival/libunarchive/get_header_tar.c
+++ b/archival/libunarchive/get_header_tar.c
@@ -364,7 +364,7 @@
 	archive_handle->offset += file_header->size;
 
 	free(file_header->link_target);
-	/* Do not free(file_header->name)! */
+	/* Do not free(file_header->name)! (why?) */
 #if ENABLE_FEATURE_TAR_UNAME_GNAME
 	free(file_header->uname);
 	free(file_header->gname);