(bug 27722) list=filearchive now supports revdel

(bug 27722) list=filearchive now supports revdel
* Adds a condition fa_deleted=0 if the user does not have the suppressrevision rights. This field is unindexed. This should however not be a big problem as files with fa_deleted are rare. Unfortunately this hides files that do not have DELETED_RESTRICTED, but I don't know how bad fa_deleted & DELETED_RESTRICTED = 0 is for performance
* Added deletedfile, deletedcomment, deleteduser and deletedrestricted to the output for what I think are appropriate fa_deleted fields, but it's hard to tell what's corrent without a single line of documentation or even comment in the code. Perhaps somebody can dig up a commit message where the purpose of the constants is explained?