Libtoolize now advises AC_CONFIG_MACRO_DIR use where appropriate.

Libtoolize now advises AC_CONFIG_MACRO_DIR use where appropriate.

* libtoolize.at (func_check_macros): Always advise use of
AC_CONFIG_MACRO_DIR when not able to copy libtool macros into
the project tree.
* tests/libtoolize.at: New test for correct diagnosis of mismatch
between AC_CONFIG_MACRO_DIR and ACLOCAL_AMFLAGS.
Update expected output of other tests.
* NEWS: Updated.