Fix fallouts from previous patch

These kind of arch specific code is really nasty
to make it right becuase you need to verify on
all the platforms.

Now should compile properly also on ARM

Reported by Jean-Francois.

No functional change.

src/Makefile

@@ -175,6 +175,7 @@ endif
 ifeq ($(COMP),mingw)
 	comp=mingw
 	CXX=g++
+	prefetch = yes
 	profile_prepare = gcc-profile-prepare
 	profile_make = gcc-profile-make
 	profile_use = gcc-profile-use
@@ -184,6 +185,7 @@ endif
 ifeq ($(COMP),gcc)
 	comp=gcc
 	CXX=g++
+	prefetch = yes
 	profile_prepare = gcc-profile-prepare
 	profile_make = gcc-profile-make
 	profile_use = gcc-profile-use
@@ -202,6 +204,7 @@ endif
 ifeq ($(COMP),clang)
 	comp=clang
 	CXX=clang++
+	prefetch = yes
 	profile_prepare = gcc-profile-prepare
 	profile_make = gcc-profile-make
 	profile_use = gcc-profile-use

src/misc.cpp

@@ -227,7 +227,9 @@ void prefetch(char*) {}
 
 #else
 
+#  if defined(__INTEL_COMPILER) || defined(__ICL) || defined(_MSC_VER)
 #   include <xmmintrin.h>
+#  endif
 
 void prefetch(char* addr) {