* 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.

m4/Makefile.am

@@ -1,6 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
 EXTRA_DIST = 					\
-atconfig.m4					\
 c-bs-a.m4					\
 codeset.m4					\
 error.m4					\

m4/atconfig.m4

@@ -1,22 +0,0 @@
-## ----------------------##
-## Prepare for testing.  ##
-## ----------------------##
-
-# serial 2
-
-# Single argument says where are built sources to test, relative to the
-# built test directory.  Maybe omitted if the same (flat distribution).
-
-AC_DEFUN([AT_CONFIG],
-[AT_TESTPATH=ifelse([$1], [], [.], [$1])
-AC_SUBST([AT_TESTPATH])
-# Try to be compatible with both Autoconf 2.13 and 2.50.
-if test -z "$ECHO_C$ECHO_N$ECHO_T"; then
-  ECHO_C="$ac_c"
-  ECHO_N="$ac_n"
-  ECHO_T="$ac_t"
-  AC_SUBST([ECHO_C])
-  AC_SUBST([ECHO_N])
-  AC_SUBST([ECHO_T])
-fi
-])