bionic: fix gcc build

The memset() prototype from glibc includes __THROW and __nonnull as
decorators, which are nonstandard.  Remove these for additional
compatibility with gcc.

Additionally, remove linux/types.h and linux/string.h, and replace them
with sys/types.h and sys/string.h.

vsprintf.c

@@ -12,8 +12,8 @@
  */
 
 #include <stdarg.h>
-#include <linux/types.h>
-#include <linux/string.h>
+#include <sys/types.h>
+#include <sys/string.h>
 #include <errno.h>
 #include <stdint.h>
 #include "bionic.h"