Upgrade our contrib/autotools/

This also means our old compile.patch is redundant

Author: roystgnr

bootstrap

@@ -136,7 +136,7 @@ if (test "x$build_autotools" = "x1"); then
     # set the path to use the new tools as they are installed.
     # for example, the new autoconf is needed to build automake.
 	PATH=$autotools_distdir/bin:$PATH
-	for tool in autoconf-2.69 automake-1.16.1 libtool-2.4.6 ; do
+	for tool in autoconf-2.71 automake-1.16.5 libtool-2.4.7 ; do
 	    cd $autotools_distdir
 	    echo "  building $tool in $autotools_distdir"
 	    tar zxf $tool.tar.gz

build-aux/compile.patch

@@ -1,31 +1,7 @@
-commit 036e440ed40d804cdabb000f3cdf8481537f0c51
-Author: Max Khon <fjoe@samodelkin.net>
-Date:   Sat Jan 29 22:35:03 2022 +0700
-
-    Treat *.C files as C++
-
 diff --git a/build-aux/compile b/build-aux/compile
 index 99e50524b..042bc613a 100755
 --- a/build-aux/compile
 +++ b/build-aux/compile
-@@ -53,7 +53,7 @@ func_file_conv ()
- 	  MINGW*)
- 	    file_conv=mingw
- 	    ;;
--	  CYGWIN*)
-+	  CYGWIN* | MSYS*)
- 	    file_conv=cygwin
- 	    ;;
- 	  *)
-@@ -67,7 +67,7 @@ func_file_conv ()
- 	mingw/*)
- 	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
- 	  ;;
--	cygwin/*)
-+	cygwin/* | msys/*)
- 	  file=`cygpath -m "$file" || echo "$file"`
- 	  ;;
- 	wine/*)
 @@ -204,7 +204,7 @@ func_cl_wrapper ()
  	  set x "$@" "$1"
  	  shift