Protobuf: Upgrade to version 3.1

Signed-off-by: Per Sandström <per.j.sandstrom@gmail.com>

libs/protobuf/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=protobuf
-PKG_VERSION:=2.6.1
+PKG_VERSION:=3.1.0
 PKG_RELEASE:=1
 
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
+PKG_SOURCE:=$(PKG_NAME)-cpp-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/google/protobuf/releases/download/v$(PKG_VERSION)
-PKG_MD5SUM:=11aaac2d704eef8efd1867a807865d85
+PKG_MD5SUM:=bd5e3eed635a8d32e2b99658633815ef
 
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE
@@ -30,9 +30,9 @@ define Package/protobuf
   SECTION:=libs
   CATEGORY:=Libraries
   TITLE:=A structured data encoding library
-  URL:=http://code.google.com/p/protobuf/
+  URL:=https://github.com/google/protobuf
   DEPENDS:=+zlib +libpthread +libstdcpp
-  MAINTAINER:=Jacob Siverskog <jacob@teenageengineering.com>
+  MAINTAINER:=Per Sandström <per.j.sandstrom@gmail.com>
 endef
 
 define Package/protobuf/description

libs/protobuf/patches/001-mipseb-compile.patch

@@ -1,11 +0,0 @@
---- -	2015-05-19 16:27:29.770936016 +0200
-+++ protobuf-2.6.1/src/google/protobuf/stubs/platform_macros.h	2015-05-19 13:49:52.115444643 +0200
-@@ -55,7 +55,7 @@
- #elif defined(__aarch64__)
- #define GOOGLE_PROTOBUF_ARCH_AARCH64 1
- #define GOOGLE_PROTOBUF_ARCH_64_BIT 1
--#elif defined(__MIPSEL__)
-+#elif defined(__MIPSEL__) || defined(__MIPSEB__)
- #if defined(__LP64__)
- #define GOOGLE_PROTOBUF_ARCH_MIPS64 1
- #define GOOGLE_PROTOBUF_ARCH_64_BIT 1

libs/protobuf/patches/003-mips2andHigher-compile.patch

@@ -1,11 +0,0 @@
---- -	2015-05-19 16:29:09.614344473 +0200
-+++ protobuf-2.6.1/src/google/protobuf/stubs/atomicops_internals_mips_gcc.h	2015-05-19 13:49:52.127442746 +0200
-@@ -150,7 +150,7 @@
- }
- 
- inline void MemoryBarrier() {
--  __asm__ __volatile__("sync" : : : "memory");
-+  __asm__ __volatile__(".set mips2; sync; .set mips0" : : : "memory");
- }
- 
- inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {