Carry over change to fix build on ICC that was lost in merge from 4.1.

config/ac-macros/misc.m4:
  Try exit-related declarations before including stdlib.h, as
  this is how the actual code is structured.

config/ac-macros/misc.m4

@@ -646,8 +646,8 @@ m4_define([_AC_PROG_CXX_EXIT_DECLARATION],
    'void exit (int);' \
    '#include <stdlib.h>'
 do
-  _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([@%:@include <stdlib.h>
-$ac_declaration],
+  _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$ac_declaration
+@%:@include <stdlib.h>],
                                       [exit (42);])],
                      [],
                      [continue])