major bugfix for sigset_t (it was mistakenly 1024 bytes instead of bits)

note that object files using sigset_t (or struct sigaction) need to be
recompiled to work correctly after this fix.

include/bits/alltypes.h.sh

@@ -96,7 +96,7 @@ TYPEDEF int timer_t;
 TYPEDEF int clockid_t;
 TYPEDEF unsigned long clock_t;
 
-TYPEDEF struct { unsigned long __bits[1024/sizeof(long)]; } sigset_t;
+TYPEDEF struct { unsigned long __bits[128/sizeof(long)]; } sigset_t;
 TYPEDEF struct __siginfo siginfo_t;
 
 TYPEDEF unsigned int socklen_t;