Fixes the `AC_ARG_VAR' test failures.
* lib/autoconf/status.m4 (_AC_OUTPUT_FILES): Don't use cmp.
* lib/freeze.mk (check-forbidden-patterns): New.
* lib/autoconf/Makefile.am, lib/autotest/Makefile.am
* lib/m4sugar/Makefile.am (check-local): Use it to catch `cmp'.
* doc/autoconf.texi (Limitations of Usual Tools): HP-UX' cmp and
/dev/null.
Reported months ago by H. Merijn Brand.
* Makefile.am (AUTOMAKE_OPTIONS): Add 1.5 and dist-bzip2.
(AMTAR): Help automake define it.
(INSTALL, install-data-hook): The INSTALL.txt trick is no longer
needed, 1.5 can have a macro and a target with the same name.
* m4/auxdir.m4, m4/cond.m4, m4/depend.m4, m4/install-sh.m4,
* m4/strip.m4: New.
* m4/init.m4, m4/sanity.m4: Update.
* doc/Makefile.am (CLEANFILES): 1.5 knows the texi2dvi files.
* lib/autoconf/Makefile.am, lib/autotest/Makefile.am,
* lib/m4sugar/Makefile.am, lib/autoscan/Makefile.am,
* lib/Autom4te/Makefile.am, man/Makefile.am: Use dist/nodist.
* lib/autotest/autotest.m4: New.
* lib/autotest/general.m4, tests/atspecific.m4: Adjust.
* tests/suite.at : Adjust.
(AT_INIT): Log config.log.
* lib/m4sugar/m4sugar.m4 (m4_text_box): New.
* lib/m4sugar/m4sh.m4 (_AS_BOX_LITERAL): Adjust.
* lib/autoconf/general.m4 (_AC_INIT_CONFIG_LOG): Use them.
(_AC_INIT_PREPARE): Fix the incredibly messy and buggy completion
of config.log on traps.
(_AC_OUTPUT_CONFIG_STATUS): Use AS_BOX.
Use consistently `_ACEOF' for configure's here docs, and `_CSEOF'
for config.status'.
Open the log as soon as possible.
Use the same log introduction as configure's.
their use in AC_CONFIG_COMMANDS for instance...
* lib/autoconf/general.m4, lib/autoconf/specific.m4,
* lib/autotest/general.m4: Rename the EOF tags as `_ACEOF',
`_CSEOF', or `_ATEOF', as appropriate.
* lib/m4sugar/Makefile.am, lib/autoconf/Makefile.am,
* lib/autotest/Makefile.am (check-local): Enforce this constraint.
