Initialising the return values to and error is best practice and makes the library more robust.
8e76332
Additional changes to temporarily enable running tests: ssl_srv.c and test_suite_ecdh use mbedtls_ecp_group_load instead of mbedtls_ecdh_setup test_suite_ctr_drbg uses mbedtls_ctr_drbg_update instead of mbedtls_ctr_drbg_update_ret
Add selftests for key wrapping
1. Add kw to the Makefiles 2. Implement the algorithms as defined in SP800-38F, and RFC 3394.
