Change CURL_CHECK_DEF_INTXX_C suffix definition detection.

    AC_LANG_SOURCE(

ifelse($2,,,[$2])[[

#ifdef $1

CURL_DEF_TOKEN $1(_)

$1(CURL_DEF_TOKEN)

#endif

    ]])

  ],[

    echo " " >&6

    echo "DEBUG: preproc IF-ACTION branch for $1 -----" >&6

    echo "DEBUG: ------- preproc source follows: " >&6

    sed 's/^/cpp-src> /' conftest.$ac_ext >&6

    (eval "$ac_cpp conftest.$ac_ext") 2>conftest.yang2 1>conftest.yang1

    echo "DEBUG: ------- preproc STDOUT follows: " >&6

    sed 's/^/cpp-out> /' conftest.yang1 >&6

    echo "DEBUG: ------- preproc STDERR follows: " >&6

    sed 's/^/cpp-err> /' conftest.yang2 >&6

    echo "DEBUG: ------- preproc STDERR ends in above line. " >&6

    echo "DEBUG: ------- shell tmp_suf follows: " >&6

    tmp_suf=`eval "$ac_cpp conftest.$ac_ext" 2>/dev/null | \

      "$GREP" CURL_DEF_TOKEN 2>/dev/null | \

      "$SED" 's/.*CURL_DEF_TOKEN[[ ]]//' 2>/dev/null | \

      "$SED" 's/.*'$1'//' 2>/dev/null | \

      "$SED" 's/[[^'$curl_cv_alnum']]//g' 2>/dev/null`

      "$SED" 's/.*CURL_DEF_TOKEN//' 2>/dev/null | \

      "$SED" 's/[[^'"$curl_cv_alnum"']]//g' 2>/dev/null`

    echo "DEBUG: $tmp_suf"  >&6

    echo "DEBUG: ------- shell tmp_suf ends in above line. " >&6

    if test -z "$tmp_suf"; then

      tmp_suf=""

    fi

  ],[

    echo " " >&6

    echo "DEBUG: preproc ELSE-ACTION branch for $1 -----" >&6

    echo "DEBUG: ------- preproc source follows: " >&6

    sed 's/^/cpp-src> /' conftest.$ac_ext >&6

    (eval "$ac_cpp conftest.$ac_ext") 2>conftest.yang2 1>conftest.yang1

    echo "DEBUG: ------- preproc STDOUT follows: " >&6

    sed 's/^/cpp-out> /' conftest.yang1 >&6

    echo "DEBUG: ------- preproc STDERR follows: " >&6

    sed 's/^/cpp-err> /' conftest.yang2 >&6

    echo "DEBUG: ------- preproc STDERR ends in above line. " >&6

  ])

  rm -f conftest.yang1

  rm -f conftest.yang2

  if test -z "$tmp_suf"; then

    AS_VAR_SET(ac_HaveDef, no)

  else