Guibescos/transition to permissions (#297)

* Before clippy

* Done

* Cleanup

* Add tests

* Reenable flag

* Add tests

Author: guibescos

program/rust/src/lib.rs

@@ -1,8 +1,6 @@
 #![deny(warnings)]
 // Allow non upper case globals from C
 #![allow(non_upper_case_globals)]
-// Allow using the solana_program::entrypoint::deserialize function
-#![allow(clippy::not_unsafe_ptr_arg_deref)]
 
 mod c_oracle_header;
 mod deserialize;