doc tweak

[Bruno Haible]

The macros in section "Particular functions" appear to be alphabetically
but not really. Here is a proposed fix:


2009-10-04  Bruno Haible  <address@hidden>

        * doc/autoconf.texi (Particular Functions): Swap sections about
        AC_FUNC_MBRTOWC and AC_FUNC_MEMCMP.

*** doc/autoconf.texi.orig      2009-10-04 19:33:14.000000000 +0200
--- doc/autoconf.texi   2009-10-04 19:31:40.000000000 +0200
***************
*** 5105,5110 ****
--- 5105,5123 ----
  @code{ac_cv_func_malloc_0_nonnull} variable.
  @end defmac
  
+ @defmac AC_FUNC_MBRTOWC
+ @acindex{FUNC_MBRTOWC}
+ @cvindex HAVE_MBRTOWC
+ @c @fuindex mbrtowc
+ @prindex @code{mbrtowc}
+ @caindex func_mbrtowc
+ Define @code{HAVE_MBRTOWC} to 1 if the function @code{mbrtowc} and the
+ type @code{mbstate_t} are properly declared.
+ 
+ The result of this macro is cached in the @code{ac_cv_func_mbrtowc}
+ variable.
+ @end defmac
+ 
  @defmac AC_FUNC_MEMCMP
  @acindex{FUNC_MEMCMP}
  @ovindex LIBOBJS
***************
*** 5124,5142 ****
  @code{memcmp}.  New programs need not use this macro.
  @end defmac
  
- @defmac AC_FUNC_MBRTOWC
- @acindex{FUNC_MBRTOWC}
- @cvindex HAVE_MBRTOWC
- @c @fuindex mbrtowc
- @prindex @code{mbrtowc}
- @caindex func_mbrtowc
- Define @code{HAVE_MBRTOWC} to 1 if the function @code{mbrtowc} and the
- type @code{mbstate_t} are properly declared.
- 
- The result of this macro is cached in the @code{ac_cv_func_mbrtowc}
- variable.
- @end defmac
- 
  @defmac AC_FUNC_MKTIME
  @acindex{FUNC_MKTIME}
  @ovindex LIBOBJS
--- 5137,5142 ----