tools/m4: update 1.4.18

Patch 100-fix-gets-removal.patch is removed because it's included in the new version.

Signed-off-by: Etienne Haarsma <bladeoner112@gmail.com>
(cherry picked from commit d90abebd06)

tools/m4/Makefile

@@ -7,11 +7,11 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=m4
-PKG_VERSION:=1.4.17
+PKG_VERSION:=1.4.18
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/$(PKG_NAME)
-PKG_HASH:=f0543c3beb51fa6b3337d8025331591e0e18d8ec2886ed391f1aade43477d508
+PKG_HASH:=f2c1e86ca0a404ff281631bdc8377638992744b175afb806e25871a24a934e07
 PKG_CAT:=xzcat
 
 HOST_BUILD_PARALLEL:=1

tools/m4/patches/100-fix-gets-removal.patch

@@ -1,17 +0,0 @@
---- a/lib/stdio.in.h
-+++ b/lib/stdio.in.h
-@@ -714,14 +714,6 @@ _GL_WARN_ON_USE (getline, "getline is un
- # endif
- #endif
- 
--/* It is very rare that the developer ever has full control of stdin,
--   so any use of gets warrants an unconditional warning; besides, C11
--   removed it.  */
--#undef gets
--#if HAVE_RAW_DECL_GETS
--_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
--#endif
--
- 
- #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
- struct obstack;