json-c: Update, enable shared & refresh patch.

This fixes CVE-2013-6371 and CVE-2013-6370.

src/json-c-1-patch-remove-rpl.patch

@@ -3,14 +3,14 @@ See index.html for further information.
 
 see http://lists.fedoraproject.org/pipermail/mingw/2009-May/001567.html
 
---- a/configure.in	2012-07-12 01:57:09.000000000 +0200
-+++ b/configure.in	2012-07-12 01:59:06.000000000 +0200
-@@ -25,8 +25,6 @@
+--- a/configure.ac	2014-04-11 03:47:07.000000000 +0200
++++ b/configure.ac	2014-10-12 19:44:52.809838565 +0200
+@@ -40,8 +40,6 @@
  # Checks for library functions.
  AC_FUNC_VPRINTF
  AC_FUNC_MEMCMP
 -AC_FUNC_MALLOC
 -AC_FUNC_REALLOC
- AC_CHECK_FUNCS(strcasecmp strdup strndup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
-
- #check if .section.gnu.warning accepts long strings (for __warn_references)
+ AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
+ AC_CHECK_DECLS([INFINITY], [], [], [[#include <math.h>]])
+ AC_CHECK_DECLS([nan], [], [], [[#include <math.h>]])

src/json-c-2-fix-wincrypt-include.patch

@@ -0,0 +1,21 @@
+This file is part of MXE.
+See index.html for further information.
+
+mingw32 doesn't include wincrypt.h in windows.h, so the build fails.
+
+This is basically
+https://github.com/ams-cs/json-c/commit/ca0ebe0f71b806f73a20d5d5e0da78aba5de42be
+
+--- a/random_seed.c	2014-04-11 02:41:08.000000000 +0200
++++ b/random_seed.c	2014-10-12 20:07:32.419043270 +0200
+@@ -181,7 +181,10 @@
+ #define HAVE_CRYPTGENRANDOM 1
+ 
+ #include <windows.h>
++#include <wincrypt.h>
++#ifndef __GNUC__
+ #pragma comment(lib, "advapi32.lib")
++#endif
+ 
+ static int get_cryptgenrandom_seed()
+ {

src/json-c.mk

@@ -3,8 +3,8 @@
 
 PKG             := json-c
 $(PKG)_IGNORE   :=
-$(PKG)_VERSION  := 0.11
-$(PKG)_CHECKSUM := 4bae2468bfd73a2b2eec7419c75c262b5833f567
+$(PKG)_VERSION  := 0.12
+$(PKG)_CHECKSUM := c6d8019c706af146006aa6cd91839c7d3c581e94
 $(PKG)_SUBDIR   := $(PKG)-$($(PKG)_VERSION)
 $(PKG)_FILE     := $(PKG)-$($(PKG)_VERSION)-nodoc.tar.gz
 $(PKG)_URL      := https://s3.amazonaws.com/$(PKG)_releases/releases/$($(PKG)_FILE)
@@ -21,17 +21,13 @@ endef
 define $(PKG)_BUILD
     cd '$(1)' && ./autogen.sh
     cd '$(1)' && ./configure \
-        --host='$(TARGET)' \
-        --prefix='$(PREFIX)/$(TARGET)' \
-        --build="`config.guess`"\
-        --disable-shared
+        $(MXE_CONFIGURE_OPTS) \
         CFLAGS=-Wno-error
-    $(MAKE) -C '$(1)' -j '$(JOBS)' install
+    $(MAKE) -C '$(1)' -j '$(JOBS)' install $(MXE_REMOVE_CRUFT)
 
     '$(TARGET)-gcc' \
         -W -Wall -Werror -ansi -pedantic \
         '$(2).c' -o '$(PREFIX)/$(TARGET)/bin/test-json-c.exe' \
-        `'$(TARGET)-pkg-config' json --cflags --libs`
+        `'$(TARGET)-pkg-config' json-c --cflags --libs`
 endef
 
-$(PKG)_BUILD_SHARED =