Remove array_ prefix from ARRAY_DEF

See commit on shared pointers.

example/ex-array04.c

@@ -3,8 +3,8 @@
 #include "m-array.h"
 #include "m-algo.h"
 
-ARRAY_DEF(mpz, mpz_t, M_CLASSIC_OPLIST(mpz))
-ALGO_DEF(array_mpz, ARRAY_OPLIST(mpz, M_CLASSIC_OPLIST(mpz)))
+ARRAY_DEF(array_mpz, mpz_t, M_CLASSIC_OPLIST(mpz))
+ALGO_DEF(array_mpz, ARRAY_OPLIST(array_mpz, M_CLASSIC_OPLIST(mpz)))
 
 static inline void my_mpz_inc(mpz_t *d, const mpz_t a){
   mpz_add(*d, *d, a);