[389-devel] Please review (take 2): [389 Project] #490: Slow role performance when using a lot of roles

[Noriko Hosoi]

https://fedorahosted.org/389/ticket/490

https://fedorahosted.org/389/attachment/ticket/490/0001-Ticket-490-Slow-role-performance-when-using-a-lot-of.2.patch

  Following the suggestion from Rich, I separated the change on str2filter.c
  to another ticket/patch (https://fedorahosted.org/389/ticket/603).