[fti] add cw_fti_index_rql_limit method Improves on and deprecate cw_fti_index_rql_queries: execute the rql directly, so that we don't need to compute the set of eids up-front, but can just keep track of the last seen entity. Use the new method in reindex_entities. Keep calling cw_fti_index_rql_queries if it has been redefined (e.g in cubes). Related to #3621392.

[fti] backout 166c6f7b1be4 * breaks tests * see next commit for a better solution

[py3k] Fix unicode added in commit 2350424585f8

[server/ldap] deal with unicode or str coming out of ldap It seems we can get either, I've no idea in which exact circumstances, so this should let us work with both.

[test] pull yapps from Logilab's github Fixes a couple of failures, pull request is almost a year old (https://github.com/smurfix/yapps/pull/2).

[pkg] bump yams requirement to 0.41.1 Needed by changeset c9321aedfbf9.

[entities] import range from six.moves

merge head published by accident

[fti] Improve big table reindexation * Slice the reindexing in batches of 1000 entities. * Make the output more verbose. Closes #3621392

[tox] Reference requirements.txt for hooks environment The file existed but was not referenced.