General reformat and tify up in line with Autoconf-2.50 support.
(AC_LTDL_FUNC_ARGZ): Test for system implementations of a
handful of argz API calls, the error_t type, and the argz.h
header.
* libltdl/configure.ac (AM_INIT_AUTOMAKE): Bump version number.
* libltdl/ltdl.c (rpl_argz_append, rpl_argz_create_sep.
rpl_argz_insert, rpl_rgz_next): Fallback implementations of
the similarly named functions for machines that don;t use glibc.
(lt_dlrealloc): New memory function pointer that can be set by
the client. Defaults to rpl_realloc, which in turn uses only
lt_dlmalloc and lt_dlfree.
(LT_EMALLOC, LT_EREALLOC): Set internal out-of-memory error
inside the functions called by these new macros. Simplified all
callers by removing explicit client error reporting.
(memmove): Fallback implementation of overlap safe memory copy
function.
(tryall_dlopen): Factorized common code into...
(tryall_dlopen_module): ...this new helper function.
(canonicalize_path): Changed function signature to return success
or failure. Updated all callers.
(foreachfile_callback): Make use of argz API.
(LT_DLSTRLEN): Moved from here...
* libltdl/ltdl.h (LT_STRLEN): ...to here. Updated all callers.
(lt_dlrealloc): Declare new memory management handle.
* configure.ac: Mark as needing autoconf-mode in
emacs. Pass arguments to AC_INIT.
* cdemo/configure.ac: Ditto.
* demo/configure.ac: Ditto.
* depdemo/configure.ac: Ditto.
* libtldl/configure.ac: Ditto.
* mdemo/configure.ac: Ditto.
* pdemo/configure.ac: Ditto.
* tagdemo/configure.ac: Ditto.
* ltdl.m4: Mark as needing autoconf-mode in
emacs.
* libtool.m4: Mark as needing autoconf-mode in
emacs. Don't add () to AS_MESSAGE_LOG_FD.
* libltdl/configure.ac: Use config-h.in as
template for config.h.
* tagdemo/configure.ac: Drop the AC_DIAGNOSTIC. Move
AC_LANG([C++]) after the OBJEXT/EXEEXT check.
