MacOS: Fix Blake2s SSE 4.1 not being built

For now, we set GCC_GTEQ_430 to 1 to each OS. Later we will always
suppose that gcc is newer than 4.3 and remove this logic.

src/Makefile

@@ -303,6 +303,8 @@ ifeq "$(shell uname -s)" "Darwin"
  CC := gcc
  CXX := g++
 
+ GCC_GTEQ_430 := 1
+
  C_CXX_FLAGS += -DTC_UNIX -DTC_BSD -DTC_MACOSX -mmacosx-version-min=$(VC_OSX_TARGET) -isysroot $(VC_OSX_SDK_PATH)
  LFLAGS += -mmacosx-version-min=$(VC_OSX_TARGET) -Wl,-syslibroot $(VC_OSX_SDK_PATH)
  WX_CONFIGURE_FLAGS += --with-macosx-version-min=$(VC_OSX_TARGET) --with-macosx-sdk=$(VC_OSX_SDK_PATH)
@@ -381,6 +383,8 @@ ifeq "$(shell uname -s)" "FreeBSD"
 
  CC := cc
  CXX := c++
+
+ GCC_GTEQ_430 := 1
 
  ifeq "$(TC_BUILD_CONFIG)" "Release"
  C_CXX_FLAGS += -fdata-sections -ffunction-sections -fpie
@@ -441,6 +445,8 @@ ifeq "$(shell uname -s)" "OpenBSD"
  CC := cc
  CXX := c++
 
+ GCC_GTEQ_430 := 1
+
  ifeq "$(TC_BUILD_CONFIG)" "Release"
  C_CXX_FLAGS += -fdata-sections -ffunction-sections -fpie
  LFLAGS += -Wl,--gc-sections -pie