libtool upgrade to 2.4.6 - 9/n: fix func_fatal_error function name typo

http://git.savannah.gnu.org/gitweb/?p=libtool.git;a=commitdiff;h=350082b6aa89f9ef603fcebbb4cf33f15a743f2f

build-scripts/ltmain.sh

@@ -2124,7 +2124,7 @@ fi
 # a configuration failure hint, and exit.
 func_fatal_configuration ()
 {
-    func__fatal_error ${1+"$@"} \
+    func_fatal_error ${1+"$@"} \
       "See the $PACKAGE documentation for more information." \
       "Fatal configuration error."
 }