vchoi_fork

[svn-r13490] Description:
	Move "creation order tracked" flag from "group info" to "link info"
object header message and make the "max. creation order value" optional in the 
"link info", if the creation order for links is not tracked.

	Also, get rid of unused "index names" flag - names are always indexed
currently.

Tested on:
	FreeBSD/32 6.2 (duty)