Use Gnulib's `byteswap' module.
* Makefile.am (SUBDIRS): Added `lib'.
(ACLOCAL_AMFLAGS): New.
* configure.ac: (AC_CONFIG_MACRO_DIR): New.
(gl_INIT, gl_EARLY): New.
No longer check for <byteswap.h>. Output `lib/Makefile'.
* src/bytevector.c: Include <byteswap.h> unconditionally.
(non_native_byteswap_16, non_native_byteswap_32): Removed, use
`bswap_{16,32}' directly.
(bswap_24): New macro (unused).
* tests/Makefile.am (check_DATA): Renamed to `EXTRA_DIST'.
git-archimport-id: lcourtes@laas.fr--2006-libre/guile-r6rs-libs--devo--0--patch-3