Bug#11761576 54082: HANDLE_SEGFAULT MAKES USE OF UNSAFE FUNCTIONS

Post-push fixes.

mysys/stacktrace.c

@@ -170,7 +170,7 @@ void my_print_stacktrace(uchar* stack_bottom __attribute__((unused)),
     my_safe_printf_stderr("%s",
       "Error when traversing the stack, stack appears corrupt.\n");
   else
-    my_safe_printf_stderr("%s"
+    my_safe_printf_stderr("%s",
       "Please read "
       "http://dev.mysql.com/doc/refman/5.1/en/resolve-stack-dump.html\n"
       "and follow instructions on how to resolve the stack trace.\n"

sql/mysqld.cc

@@ -2468,10 +2468,6 @@ static void check_data_home(const char *path)
 
 #endif /*__WIN__ || __NETWARE */
 
-#ifdef HAVE_LINUXTHREADS
-#define UNSAFE_DEFAULT_LINUX_THREADS 200
-#endif
-
 
 #if BACKTRACE_DEMANGLE
 #include <cxxabi.h>

sql/signal_handler.cc

@@ -131,6 +131,7 @@ extern "C" sig_handler handle_fatal_signal(int sig)
     "Hope that's ok; if not, decrease some variables in the equation.\n\n");
 
 #if defined(HAVE_LINUXTHREADS)
+#define UNSAFE_DEFAULT_LINUX_THREADS 200
   if (sizeof(char*) == 4 && thread_count > UNSAFE_DEFAULT_LINUX_THREADS)
   {
     my_safe_printf_stderr(