* tests/atgeneral.m4, tests/atconfig.in, tests/suite.at: Remove.

* m4/atconfig.m4: Remove.
* tests/testsuite.at, tests/atlocal.in, tests/output.at,
* tests/bison: New.
* tests/regression.at, tests/calc.at: Use m4_define, AT_BANNER,
m4_if, m4_patsubst, and m4_regexp.
* tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Use an
`input' file instead of echo.

tests/regression.at

@@ -1,11 +1,22 @@
-#                                                        -*- Autoconf -*-
+# Bison Regressions.                               -*- Autotest -*-
+# Copyright 2001 Free Software Foundation, Inc.
 
-cat <<EOF
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
 
-Regression tests.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
 
-EOF
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
 
+AT_BANNER([[Regression tests.]])
 
 ## ------------------ ##
 ## Duplicate string.  ##