Permit optional values to be bundled.
Permit optional values to be bundled.

	* src/NDesk.Options/NDesk.Options/Options.cs: Permit bundling of option vals.

MikeJansen/NDesk.Options.StrongNamed,chakrit/ndesk-options-mirror,MikeJansen/NDesk.Options.StrongNamed,MikeJansen/NDesk.Options.StrongNamed,chakrit/ndesk-options-mirror