Re: 15-classified-tests.patch

[Akim Demaille]

| Ok, but I think we should keep on testing obsolete macros, to make
| sure we don't accidentally break them.  Otherwise, we might just go
| and remove them, since we'll have no means to tell whether they still
| do what they originally did.

They are kept, but in the corresponding test file.  Maybe my ChangeLog
was not clear enough :(

For instance acheaders.at:

# Generated by mktests.sh, do not edit by hand. -*- autoconf -*-

AT_BANNER([Testing acheaders macros.])

# Modern macros.
AT_CHECK_MACRO([AC_HEADER_MAJOR])
AT_CHECK_MACRO([AC_HEADER_STAT])
AT_CHECK_MACRO([AC_HEADER_TIOCGWINSZ])

# Obsolete macros.
AT_CHECK_AU_MACRO([AC_DIR_HEADER])
AT_CHECK_AU_MACRO([AC_MEMORY_H])
AT_CHECK_AU_MACRO([AC_UNISTD_H])
AT_CHECK_AU_MACRO([AC_USG])