[gparted] Update AC_PROG_LIBTOOL to LT_INIT in configure.ac (!106)

[Curtis Gedak <gedakc src gnome org>]

commit 5e2927f1efbd33c607790af98560d6849921f4f7
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Sat Jun 4 09:06:54 2022 +0100

    Update AC_PROG_LIBTOOL to LT_INIT in configure.ac (!106)
    
    Autoconf 2.71 on Fedora 36 and Ubuntu 22.04 LTS has started reporting
    a number of warnings about configure.ac containing obsolete macros.  One
    of them is this:
        $ ./autogen.sh
        ...
        Processing ./configure.ac
        configure.ac:17: warning: The macro `AC_PROG_LIBTOOL' is obsolete.
        configure.ac:17: You should run autoupdate.
        m4/libtool.m4:99: AC_PROG_LIBTOOL is expanded from...
        configure.ac:17: the top level
        ...
    
    AC_PROG_LIBTOOL is deprecated and the replacement is LT_INIT [1].
    LT_INIT is available in all supported distributions, for example RHEL /
    CentOS 7 has libtool 2.4.2 with LT_INIT defined in
    /usr/share/aclocal/libtool.m4 serial 57.  The last known distribution
    without LT_INIT was RHEL / CentOS 5 [2].
    
    Update accordingly.
    
    [1] Libtool Manual, 5.4.1 The LT_INIT macro
        https://www.gnu.org/software/libtool/manual/html_node/LT_005fINIT.html
        "Macro: LT_INIT(options)
        ...  AC_PROG_LIBTOOL and AM_PROG_LIBTOOL are deprecated names for
        older versions of this macro; autoupdate will upgrade your
        configure.ac files."
    [2] 654cdc7335beda48f0da095a1d06e91870d9ac76
        Update AM_PROG_LIBTOOL to AC_PROG_LIBTOOL in configure.ac (#734718)
    
    Closes !106 - Update AC_PROG_LIBTOOL to LT_INIT in configure.ac

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 0e9ec191..6bde555a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,7 +14,7 @@ dnl checks for programs
 dnl======================
 AC_PROG_CXX
 AC_PROG_CC
-AC_PROG_LIBTOOL
+LT_INIT
 AC_PROG_AWK
 AC_PROG_FGREP
 AC_PROG_SED