Intel x86_64, gcc, icc: align loops to 64 byte boundary

Improved security with compile flag.

Author: SparkiDev

configure.ac

@@ -180,7 +180,7 @@ if test "$host_cpu" = "x86_64"
 then
     if test "$CC" = "gcc" || test "$CC" = "icc"
     then
-        EXTRA_OPTS_CFLAGS="$EXTRA_OPTS_CFLAGS -Wa,-mbranches-within-32B-boundaries"
+        EXTRA_OPTS_CFLAGS="$EXTRA_OPTS_CFLAGS -Wa,-mbranches-within-32B-boundaries -falign-loops=64"
     fi
 fi
 OPTIMIZE_CFLAGS="$OPTIMIZE_CFLAGS $EXTRA_OPTS_CFLAGS"