Core Plus 2.5.8

	* [Bug] Fixed a bug when loading a file from /tmp.  This needed to have been forced as a FileLocal
	  object despite that it may not be in the registered tmp location.  PHP File uploads for example use
	  the system-registered location.
	* [Feature] Added a \Core\Filestore\extension_to_mimetype function to help centralize mimetype
	  resolution for files and incoming requests.