*: suppress ~60% of "aliased warnings" on gcc-4.4.1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

runit/runsv.c

@@ -95,7 +95,7 @@ struct globals {
 	struct fd_pair logpipe;
 	char *dir;
 	struct svdir svd[2];
-};
+} FIX_ALIASING;
 #define G (*(struct globals*)&bb_common_bufsiz1)
 #define haslog       (G.haslog      )
 #define sigterm      (G.sigterm     )

runit/runsvdir.c

@@ -58,7 +58,7 @@ struct globals {
 	struct pollfd pfd[1];
 	unsigned stamplog;
 #endif
-};
+} FIX_ALIASING;
 #define G (*(struct globals*)&bb_common_bufsiz1)
 #define sv          (G.sv          )
 #define svdir       (G.svdir       )

runit/sv.c

@@ -165,7 +165,7 @@ struct globals {
 /* "Bernstein" time format: unix + 0x400000000000000aULL */
 	uint64_t tstart, tnow;
 	svstatus_t svstatus;
-};
+} FIX_ALIASING;
 #define G (*(struct globals*)&bb_common_bufsiz1)
 #define acts         (G.acts        )
 #define service      (G.service     )

runit/svlogd.c

@@ -184,7 +184,7 @@ struct globals {
 
 	sigset_t blocked_sigset;
 };
-#define G (*(struct globals*)ptr_to_globals)
+#define G (*ptr_to_globals)
 #define dir            (G.dir           )
 #define verbose        (G.verbose       )
 #define linemax        (G.linemax       )