find config.guess, install-sh etc.
Reported by Erez Zadok.
* tests/atspecific.m4 (AT_TEST_MACRO): Set AC_CONFIG_AUX_DIR to
top_srcdir in configure.in, and pass the value of top_srcdir to
configure.
AT macro with selects which are the AC macros to test, just
produce the list of the AC macros we want to test.
* tests/atspecific.m4 (TEST_MACRO): Removed.
* tests/Makefile.am (EGREP_EXCLUDE): New variable, performing the
selection TEST_MACRO used to do.
(macros.m4): Use it. Use AT_TEST_MACRO, not TEST_MACRO. Check
also AU macros.
