aclocal.m4 (GCC_FUNC_PRINTF_PTR): New macro to test the printf functions for whether they support the %p format...

* aclocal.m4 (GCC_FUNC_PRINTF_PTR): New macro to test the printf
functions for whether they support the %p format specifier.
* acconfig.h (HOST_PTR_PRINTF): Insert stub for autoconf.
* configure.in (GCC_FUNC_PRINTF_PTR): Use it.
* configure, config.in: Rebuild.

From-SVN: r17760