extras/tools: libtool: rename/cleanup patches

libtool-2.4.6-san.patch is not used anymore, and other libtool patches
have been rebased on top of libtool-2.4.7.

Makefile.am

@@ -66,9 +66,9 @@ EXTRA_DIST += \
 	extras/tools/bison-macOS-7df04f9.patch \
 	extras/tools/bison-macOS-c41f233c.patch \
 	extras/tools/cmake-enable-ALPN-support-on-macOS-10.14.patch \
-	extras/tools/libtool-2.4.6-bitcode.patch \
-	extras/tools/libtool-2.4.6-clang-libs.patch \
-	extras/tools/libtool-2.4.6-response-files.patch \
+	extras/tools/libtool-2.4.7-bitcode.patch \
+	extras/tools/libtool-2.4.7-clang-libs.patch \
+	extras/tools/libtool-2.4.7-response-files.patch \
 	extras/tools/ragel-6.8-javacodegen.patch
 
 ###############################################################################

extras/tools/libtool-2.4.6-san.patch

@@ -1,28 +0,0 @@
-From a5c6466528c060cc4660ad0319c00740db0e42ba Mon Sep 17 00:00:00 2001
-From: Jeremy Huddleston Sequoia <jeremyhu@macports.org>
-Date: Sun, 18 Oct 2015 21:55:39 -0700
-Subject: libtool: fix GCC/clang linking with -fsanitize=*
-
-References:
-https://lists.gnu.org/archive/html/libtool/2014-04/msg00026.html
-
-* build-aux/ltmain.in (func_mode_link): Pass -fsanitize=* to the
-linker to allow trivial use of the clang address sanitizer.
-
-Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@macports.org>
-Copyright-paperwork-exempt: Yes
----
---- libtool-2.4.6/build-aux/ltmain.in.orig	2019-03-06 17:24:29.400776100 +0100
-+++ libtool-2.4.6/build-aux/ltmain.in	2019-03-06 17:26:31.994381100 +0100
-@@ -5361,9 +5361,10 @@
-       # --sysroot=*          for sysroot support
-       # -O*, -g*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
-       # -stdlib=*            select c++ std lib with clang
-+      # -fsanitize=*         Clang/GCC memory and address sanitizer
-       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
-       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
--      -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*)
-+      -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*|-fsanitize=*)
-         func_quote_for_eval "$arg"
- 	arg=$func_quote_for_eval_result
-         func_append compile_command " $arg"

extras/tools/tools.mak

@@ -112,11 +112,11 @@ libtool-$(LIBTOOL_VERSION).tar.gz:
 libtool: libtool-$(LIBTOOL_VERSION).tar.gz
 	$(UNPACK)
 	(cd $(UNPACK_DIR) && chmod u+w build-aux/ltmain.sh)
-	$(APPLY) $(TOOLS)/libtool-2.4.6-bitcode.patch
-	$(APPLY) $(TOOLS)/libtool-2.4.6-clang-libs.patch
-	$(APPLY) $(TOOLS)/libtool-2.4.6-response-files.patch
-	$(APPLY) $(TOOLS)/libtool-2.4.6-lpthread.patch
-	$(APPLY) $(TOOLS)/libtool-2.4.6-embed-bitcode.patch
+	$(APPLY) $(TOOLS)/libtool-2.4.7-bitcode.patch
+	$(APPLY) $(TOOLS)/libtool-2.4.7-clang-libs.patch
+	$(APPLY) $(TOOLS)/libtool-2.4.7-response-files.patch
+	$(APPLY) $(TOOLS)/libtool-2.4.7-lpthread.patch
+	$(APPLY) $(TOOLS)/libtool-2.4.7-embed-bitcode.patch
 	$(MOVE)
 
 .buildlibtool: libtool .automake .help2man