Log Message:
Update textproc/sphinxsearch to 2.2.10.

New features and updates

- The list of SphinxQL reserved keywords is now much, much smaller than
  it used to be, and also consistent across different places in the code
  and in the docs.
- IN() function now accepts string attributes (#2233). Also, filtering
  string attributes by an empty value in WHERE clause now works.
- WHERE on float attributes got improved a bit: we added floatcol<>123.0
  syntax, and fixed an issue with using an integer reference value asi
  in floatcol=123 or floatcol!=123, see bug #2121.
- searchd --replay-flags switch (useful for binlog replay troubleshooting)
  now accepts a new option 'ignore-open-errors' that lets you simply
  ignore missing binlog files without deleting binlog meta info.
- Indexer now exits with code 2 in case of rotation failure.

Notable bug fixes
- unified min_prefix_len, min_infix_len behavior between RT and plain indexes
- expressions dependent on aggregation results (eg. as in SELECT MAX(id) m1,
  m1+10 m2) were not computed properly in RT indexes
- LENGTH() was 2x off for 64-bit MVA attributes
- OPTIMIZE could occasionally break big RT indexess
- multi-wordforms with clashing prefixes were processed in a wrong order
- disabled and later re-enabled indexes were not picked up again by searchd
  on SIGHUP

Full release notes:

  http://sphinxsearch.com/docs/latest/rel2210.html