Merge branch 'ticket/master/PUP-838-FFI_Windows_Process'
- ticket/master/PUP-838-FFI_Windows_Process: (PUP-838) Use FFI helpers read_handle / read_dword (PUP-838) Process uses LookupPrivilegeValueW (PUP-838) GetExitCodeProcess checks FFI::WIN32_FALSE (PUP-838) FFI Puppet::Util::Windows::Process module (PUP-838) Move FFI code to bottom of process.rb