Move validator_x86_XX.rl out of unreviewed.

src/trusted/validator_ragel/decoder_x86_64.rl

Index: src/trusted/validator_ragel/decoder_x86_64.rl
===================================================================
--- src/trusted/validator_ragel/decoder_x86_64.rl	(revision 10976)
+++ src/trusted/validator_ragel/decoder_x86_64.rl	(working copy)
@@ -21,7 +21,7 @@
 
 #include "native_client/src/include/elf32.h"
 #include "native_client/src/shared/utils/types.h"
-#include "native_client/src/trusted/validator_ragel/unreviewed/decoder_internal.h"
+#include "native_client/src/trusted/validator_ragel/decoder_internal.h"
 
 /*
  * These prefixes are only useful in AMD64 mode, but they will "cleaned up" by
@@ -100,6 +100,10 @@
   main := decoder;
 }%%
 
+/*
+ * The "write data" statement causes Ragel to emit the constant static data
+ * needed by the ragel machine.
+ */
 %% write data;
 
 int DecodeChunkAMD64(const uint8_t *data, size_t size,
@@ -134,7 +138,15 @@
   instruction.prefix.rex_r_spurious = FALSE;
   instruction.prefix.rex_w_spurious = FALSE;
 
+  /*
+   * The "write init" statement causes Ragel to emit initialization code.
+   * This should be executed once before the ragel machine is started.
+   */
   %% write init;
+  /*
+   * The "write exec" statement causes Ragel to emit the ragel machine's
+   * execution code.
+   */
   %% write exec;
 
 error_detected: