libvpx: Pull from upstream

source/libvpx/build/make/Makefile

Index: source/libvpx/build/make/Makefile
===================================================================
--- source/libvpx/build/make/Makefile	(revision 293081)
+++ source/libvpx/build/make/Makefile	(working copy)
@@ -217,14 +217,6 @@
 endif
 
 #
-# Rule to extract assembly constants from C sources
-#
-obj_int_extract: build/make/obj_int_extract.c
-	$(if $(quiet),@echo "    [HOSTCC] $@")
-	$(qexec)$(HOSTCC) -I. -I$(SRC_PATH_BARE) -o $@ $<
-CLEAN-OBJS += obj_int_extract
-
-#
 # Utility functions
 #
 pairmap=$(if $(strip $(2)),\
@@ -424,11 +416,7 @@
     DIST-SRCS-$(CONFIG_MSVS)  += build/make/gen_msvs_sln.sh
     DIST-SRCS-$(CONFIG_MSVS)  += build/make/gen_msvs_vcxproj.sh
     DIST-SRCS-$(CONFIG_MSVS)  += build/make/msvs_common.sh
-    DIST-SRCS-$(CONFIG_MSVS)  += build/x86-msvs/obj_int_extract.bat
-    DIST-SRCS-$(CONFIG_MSVS)  += build/arm-msvs/obj_int_extract.bat
     DIST-SRCS-$(CONFIG_RVCT) += build/make/armlink_adapter.sh
-    # Include obj_int_extract if we use offsets from *_asm_*_offsets
-    DIST-SRCS-$(ARCH_ARM)$(ARCH_X86)$(ARCH_X86_64)    += build/make/obj_int_extract.c
     DIST-SRCS-$(ARCH_ARM)    += build/make/ads2gas.pl
     DIST-SRCS-$(ARCH_ARM)    += build/make/ads2gas_apple.pl
     DIST-SRCS-$(ARCH_ARM)    += build/make/ads2armasm_ms.pl