Restore memcpy-wrapper (with small #ifdef fix).
Fix some spacing and style to minimize the differences to upstream as much as possible for later reintegration.
Rename ssEndpointCompanionDescriptor Java variable to ssEndpointCompanionDescriptorPointer.
Fix all -Wconversion warnings.
Constify new structures as needed.
Use NewDirectReadOnlyBuffer as needed.
Add missing function declarations.
Add 64bit Linux/Windows new binaries.