* libtool.m4: Updated comment.

* libtool.m4: Updated comment.
* ltcf-cxx.sh (archive_cmds, archive_expsym_cmds,
hardcode_libdir_flag_spec, export_dynamic_flag_spec,
whole_archive_flag_spec, with_gnu_ld): Added two default
configurations for GNU g++ (one for g++ with GNU ld, and one for
g++ with native linker).  Updated all platform-specific g++
configurations to only be used if GNU ld isn't the backend linker.
Added support for the KCC (Kuck and Associates, Inc. (KAI) C++
Compiler) to the Linux and OSF/1 configurations.
(ac_cv_prog_cc_wl): Added KAI C++ configuration.
(archive_expsym_cmds): Some configurations were missing the
argument that sets the name of the output library.
* libltdl/ltdl.c, libltdl/libltdl.h: Synchronized with HEAD branch
versions.

* ltcf-cxx.sh (whole_archive_flag_spec): Added missing back quotes
(`) around a command that had to be evaluated.  This fixes GNU ld
"--whole-archive" support detection.
(wlarc): Fixed usage of $wlarc, which must be $wl in all cases,
but when really using $LD for linking.

* ltmain.in (deplibs): Add the library paths to end of the
deplibs, instead of the beginning, since deplibs is reordered
later on.