Bug 11927 - Add greek to word-phrase-utf.chr

Bug 11927 - Add greek to word-phrase-utf.chr

Add greek support in word-phrase-utf.chr for searching in a Greek catalog (it can also contain latin records).

Developped in collaboration with Giannis Kourmoulis <ikourmou@lib.auth.gr>

Test plan :
- Install using CHR zebra indexing
- Index a greek catalog
- Look for results with mixed uppercase, lowercase and diacritics in title

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>