Use standard PKCS#11 standard error codes instead of custom error codes

Use standard PKCS#11 standard error codes instead of custom error codes

* CKR_CRYPTOKI_ALREADY_INITIALIZED: This value can only be returned by
  `C_Initialize`. It means that the Cryptoki library has already been
  initialized (by a previous call to `C_Initialize` which did not have a
  matching `C_Finalize` call).

* CKR_FUNCTION_NOT_SUPPORTED: The requested function is not supported by this
  Cryptoki library. Even unsupported functions in the Cryptoki API should have a
  "stub" in the library; this stub should simply return the value
  CKR_FUNCTION_NOT_SUPPORTED.

* CKR_LIBRARY_LOAD_FAILED: The Cryptoki library could not load a dependent
  shared library.

(cherry picked from commit f6922d6e7866f65bed5623ff90e14a7398337b21)