As rbalint points out, this was an exported fn.  It also is
the only way for a libsubid user to do what it does, so let's
not drop it.
This reverts commit 477c8e6f42.
		
	
As rbalint points out, this was an exported fn.  It also is
the only way for a libsubid user to do what it does, so let's
not drop it.
This reverts commit 477c8e6f42.