Dispense with the FuncUndefined/CmdUndefined quasi-optimization. If there are no rplugins, plugin/rplugin.vim takes less than 1ms. Closes #5821 Closes #6250 Helped-by: Qiming zhao <chemzqm@gmail.com>
- Rename autoload/rpc to autoload/remote - External plugins are now remote plugins - External plugins directory is "rplugin"