* aclocal.m4: Require 2.13 of autoconf.

    * aclocal.m4: Require 2.13 of autoconf.
        (DECLARE_SYS_ERRLIST, CHECK_SIGPROCMASK, CHECK_DIRENT,
        CHECK_WAIT_TYPE, CHECK_SIGNALS, KRB5_SIGTYPE, KRB5_AC_CHECK_INET6,
        HAVE_YYLINENO, KRB5_SOCKADDR_SA_LEN, AC_HEADER_STDARG,
        KRB5_AC_NEED_LIBGEN, KRB5_AC_ENABLE_DNS): Use of AC_DEFINE
        modified to provide comment for autoheader generated file.

        * acconfig.h: Remove ANSI_STDIO, NO_YYLINENO, POSIX_FILE_LOCKS,
        POSIX_SIGTYPE, POSIX_TERMIOS, USE_DIRENT_H, WAIT_USES_INT,
        krb5_sigtype, HAVE_STDARG_H, HAVE_VARARGS_H, HAV_REGCOMP,
        HAVE_SA_LEN, HAVE_SOCKLEN_T, KRB5_ATHENA_COMPAT, KRB5_KRB4_COMPAT,
        KRB5_DNS_LOOKUP, KRB5_DNS_LOOKUP_KDC, KRB5_DNS_LOOKUP_REALM,
        KRB5_USE_INET6, MEMMOVE, memmove, mkstemp and strerror. All
        replaced by use of third argument to AC_DEFINE.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@13840 dc483132-0cff-0310-8789-dd5450dbe970