Autofixer sets up for libtool v1 or v2

git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@2692 7ae35d74-ebe9-4afe-98af-79ac388436b8

README.developer

@@ -192,6 +192,14 @@ It is important to note that the SVN repository holds no autogenerated
 files, i.e. configure, config.guess, Makefile, etc.  Hence after a fresh
 checkout, you'll have to generate those files.
 
+The provided autogen.sh and configure.ac files are appropriate for systems with
+libtool version 2.  Many systems may still provide libtool version 1, however.
+To set up for version 1 of libtool, you may run the procedure autofixer.sh
+before running autogen.sh, as described below.  I.e., give the following
+command.
+
+    sh ./autofixer.sh
+
 To proceed, first edit the autogen.sh, and set appropriately the AUTOCONF,
 AUTOHEADER, AUTOHEADER, and ACLOCAL variables with the required versions
 seen in the previous section (most systems will be fine with the default