[PATCH 1/5] Remove unused function checks from configure.ac & include/*.h.in

[Mikhail Gusarov]

Twas brillig at 10:48:12 02.12.2011 UTC-08 when alan.coopersmith at oracle.com did gyre and gimble:

 AC> The code that used getisax to check for MMX support was moved to pixman
 AC> and removed from the X server by commit eb2d7fe02f9cbc.

 AC> The code that used HAVE_MKSTEMP was deleted by the Xprint removal in
 AC> commit 1c8bd318fbaf.

 AC> All alloca calls were removed by the patch series end in commit 5e363500c8,
 AC> and used custom X checks instead of the autoconf HAVE_ALLOCA anyway.

 AC> I can find no record of HAVE_GETUID, HAVE_GETEUID, HAVE_LINK, HAVE_MEMMOVE,
 AC> HAVE_MEMSET, HAVE_STRCHR, HAVE_STRRCHR, HAVE_GETOPT, HAVE_GETOPT_LONG,
 AC> HAVE_DOPRNT, or HAVE_VPRINTF ever being used, and the calls to those
 AC> functions are not wrapped in #ifdefs.
 AC> (Most of those are in our baseline requirements of C89 & Unix98 anyway.)

 AC> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>

Reviewed-by: Mikhail Gusarov <dottedmag at dottedmag.net>

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