add LSB ABI __xstat, etc. junk

src/stat/__fxstat.c

+#include <sys/stat.h>
+#include "libc.h"
+
+int __fxstat(int ver, int fd, struct stat *buf)
+{
+	return fstat(fd, buf);
+}
+
+LFS64(__fxstat);

src/stat/__fxstatat.c

+#include <sys/stat.h>
+#include "libc.h"
+
+int __fxstatat(int ver, int fd, const char *path, struct stat *buf, int flag)
+{
+	return fstatat(fd, path, buf, flag);
+}
+
+LFS64(__fxstatat);

src/stat/__lxstat.c

+#include <sys/stat.h>
+#include "libc.h"
+
+int __lxstat(int ver, const char *path, struct stat *buf)
+{
+	return lstat(path, buf);
+}
+
+LFS64(__lxstat);

src/stat/__xstat.c

+#include <sys/stat.h>
+#include "libc.h"
+
+int __xstat(int ver, const char *path, struct stat *buf)
+{
+	return stat(path, buf);
+}
+
+LFS64(__xstat);