MINOR: global/threads: move cpu_map at the end of the global struct

The "thread" part is 32kB long, better move it at the end of the
structure since it's only used during initialization, to keep the
rest grouped together.

Should be backported to 1.8 to ease backporting of upcoming patches,
no functional impact.
diff --git a/include/types/global.h b/include/types/global.h
index 1f33207..6f3fedc 100644
--- a/include/types/global.h
+++ b/include/types/global.h
@@ -163,14 +163,14 @@
 			mode_t mode;    /* 0 to leave unchanged */
 		} ux;
 	} unix_bind;
+	struct proxy *stats_fe;     /* the frontend holding the stats settings */
+	struct vars   vars;         /* list of variables for the process scope. */
 #ifdef USE_CPU_AFFINITY
 	struct {
 		unsigned long proc[LONGBITS];             /* list of CPU masks for the 32/64 first processes */
 		unsigned long thread[LONGBITS][LONGBITS]; /* list of CPU masks for the 32/64 first threads per process */
 	} cpu_map;
 #endif
-	struct proxy *stats_fe;     /* the frontend holding the stats settings */
-	struct vars   vars;         /* list of variables for the process scope. */
 };
 
 extern struct global global;