Fix the C library runtime initialization order.

This allows libc.so to run the C runtime initializer as soon as the
dynamic linker loads the shared library, i.e. before any other initializers
(e.g. static C++ constructors in other shared libraries the executable depends
on).

This also removes the bug where the initializers from the executable itself
were run twice: once by the dynamic linker, and another time by __libc_init
as defined by libc_init_dynamic.c

libc/bionic/libc_init_common.h

@@ -38,10 +38,6 @@ typedef struct
     void (**ctors_array)(void);
 } structors_array_t;
 
-extern __noreturn void __libc_init_common(uintptr_t *elfdata,
-                       void (*onexit)(void),
-                       int (*slingshot)(int, char**, char**),
-                       structors_array_t const * const structors,
-                       void (*pre_ctor_hook)());
+extern void __libc_init_common(uintptr_t *elfdata);
 
 #endif