* Fix unsafe pointer
I was compile vab with '-prod' and it was needed to fix and it is of course warning
* Add files via upload
* reduce memory leak s sha512
* add method .free() and .reset() for some
vlib is the term for all modules included by default with V and
maintained as part of the V source code repository.
Some included modules depend on third party libraries, and these are kept
separate in the thirdparty directory at the root level of the source
repository.