PATCH: Use AC_DEFUN instead of m4_defun in libtool.m4

[Paolo Bonzini]

> I don't know much about m4, autoconf nor libtool. This patch works
> for me on both gcc and binutils.

Looks good, but let's make sure it is applied to upstream libtool as well.

Paolo

> 2007-06-30  H.J. Lu  <hongjiu.lu@intel.com>
> 
> 	* libtool.m4 (_LT_CC_BASENAME): Use AC_DEFUN instead of
> 	m4_defun.
> 	(_LT_COMPILER_BOILERPLATE): Likewise.
> 	(_LT_LINKER_BOILERPLATE): Likewise.
> 
> --- binutils/libtool.m4.libtool	2007-06-01 06:42:08.000000000 -0700
> +++ binutils/libtool.m4	2007-06-30 16:56:38.000000000 -0700
> @@ -95,7 +95,7 @@ dnl AC_DEFUN([AM_PROG_LIBTOOL], [])
>  # _LT_CC_BASENAME(CC)
>  # -------------------
>  # Calculate cc_basename.  Skip known compiler wrappers and cross-prefix.
> -m4_defun([_LT_CC_BASENAME],
> +AC_DEFUN([_LT_CC_BASENAME],
>  [for cc_temp in $1""; do
>    case $cc_temp in
>      compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;;
> @@ -851,7 +851,7 @@ compiler=$CC
>  # ------------------------
>  # Check for compiler boilerplate output or warnings with
>  # the simple compiler test code.
> -m4_defun([_LT_COMPILER_BOILERPLATE],
> +AC_DEFUN([_LT_COMPILER_BOILERPLATE],
>  [m4_require([_LT_DECL_SED])dnl
>  ac_outfile=conftest.$ac_objext
>  echo "$lt_simple_compile_test_code" >conftest.$ac_ext
> @@ -865,7 +865,7 @@ $RM conftest*
>  # ----------------------
>  # Check for linker boilerplate output or warnings with
>  # the simple link test code.
> -m4_defun([_LT_LINKER_BOILERPLATE],
> +AC_DEFUN([_LT_LINKER_BOILERPLATE],
>  [m4_require([_LT_DECL_SED])dnl
>  ac_outfile=conftest.$ac_objext
>  echo "$lt_simple_link_test_code" >conftest.$ac_ext
>