Add files for binary commands
Add implementation of ws_builtin_cmd_bnot()
Add implementation for ws_builtin_cmd_band()
Add implementation for ws_builtin_cmd_bnand()
Add implementation for ws_builtin_cmd_bor()
Add implementation for ws_builtin_cmd_bnor()
Add implementation for ws_builtin_cmd_xor()
Merge pull request #301 from matthiasbeyer/add-binary_commands

Add implementation for binary command builtins