[389-devel] Please review: [389 Project] #537: Improvement of range search

[Noriko Hosoi]

https://fedorahosted.org/389/ticket/537

https://fedorahosted.org/389/attachment/ticket/537/0001-Ticket-537-Improvement-of-range-search.patch

  Fix description: The index range search function index_range
  _read_ext was written to call idl_fetch_ext to get an idlist
  belonging to one key. Then add it to the main idlist as long
  as the key satisfiles the range search filter condition.
  This patch introduces a new range search function idl_new_
  range_fetch to the new idl code, which generates an idlist
  in one idl function that eliminates the redundancy such as
  generating idlist and cursor per key.

  This patch only implements the new idl version.  If idl_new
  is not set, the existing code is executed.