(_AC_COMPILER_EXEEXT_WORKS): this. Use the `a.out' or `a.exe'
left by _AC_COMPILER_EXEEXT_DEFAULT to check if the compiler works.
(_AC_COMPILER_EXEEXT_CROSS): Extract from the above macro.
(_AC_COMPILER_EXEEXT): Use them.
Adjust all the compiler looking macros to check for EXEEXT
*first*, then OBJEXT.
Set ac_exeext yourself.
(_AC_COMPILER_EXEEXT_O): Don't.
Reported by Derek R. Price.
* tests/semantics.at (AC_REPLACE_FUNCS): New test.
* acfunctions.m4 (AC_REPLACE_FUNCS, _AC_LIBOBJ_ALLOCA): Use
AC_LIBSOURCES.
Be sure to read this file if you're using a non released Autoconf.
* tests/tools.at (Syntax of the scripts): The non built tools are
in `$top_srcdir', not `..'.
(autoconf --trace): When using `-i' we need the src tree, not the
build tree.
