m4: 1.4.17 -> 1.4.18

Rebased remove-gets.patch.

(From OE-Core rev: d87a41d2dc611259989cb1252c34d0c6ef802971)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/m4/m4-1.4.18.inc

@@ -14,5 +14,6 @@ SRC_URI += "file://ac_config_links.patch \
 SRC_URI_append_class-target = "\
            file://0001-Unset-need_charset_alias-when-building-for-musl.patch \
 	   "
-SRC_URI[md5sum] = "a5e9954b1dae036762f7b13673a2cf76"
-SRC_URI[sha256sum] = "3ce725133ee552b8b4baca7837fb772940b25e81b2a9dc92537aeaf733538c9e"
+
+SRC_URI[md5sum] = "a077779db287adf4e12a035029002d28"
+SRC_URI[sha256sum] = "ab2633921a5cd38e48797bf5521ad259bdc4b979078034a3b790d7fec5493fab"

meta/recipes-devtools/m4/m4/remove-gets.patch

@@ -4,20 +4,21 @@ undefining it.
 
 Upstream-Status: Pending
 Signed-off-by: Khem Raj <raj.khem@gmail.com>
-Index: m4-1.4.17/lib/stdio.in.h
-===================================================================
---- m4-1.4.17.orig/lib/stdio.in.h	2013-10-16 14:41:01.678496227 +0300
-+++ m4-1.4.17/lib/stdio.in.h	2013-10-16 14:41:48.849427839 +0300
-@@ -717,10 +717,12 @@
+---
+diff --git a/lib/stdio.in.h b/lib/stdio.in.h
+index 5727452..f04a691 100644
+--- a/lib/stdio.in.h
++++ b/lib/stdio.in.h
+@@ -742,10 +742,12 @@ _GL_WARN_ON_USE (getline, "getline is unportable - "
  /* 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.  */
 +#if defined gets
  #undef gets
- #if HAVE_RAW_DECL_GETS
+ #if HAVE_RAW_DECL_GETS && !defined __cplusplus
  _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
  #endif
 +#endif
  
- 
  #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
+ struct obstack;