Add a "fork" of musl as //fusl.

fusl/crt/crt1.c

Index: fusl/crt/crt1.c
diff --git a/fusl/crt/crt1.c b/fusl/crt/crt1.c
new file mode 100644
index 0000000000000000000000000000000000000000..af02af945be5f059492c530b002b23da1fa1cd9d
--- /dev/null
+++ b/fusl/crt/crt1.c
@@ -0,0 +1,18 @@
+#include <features.h>
+
+#define START "_start"
+
+#include "crt_arch.h"
+
+int main();
+void _init() __attribute__((weak));
+void _fini() __attribute__((weak));
+_Noreturn int __libc_start_main(int (*)(), int, char **,
+	void (*)(), void(*)(), void(*)());
+
+void _start_c(long *p)
+{
+	int argc = p[0];
+	char **argv = (void *)(p+1);
+	__libc_start_main(main, argc, argv, _init, _fini, 0);
+}