Bug 13981 - Transliterate rule for oe and ae

Bug 13981 - Transliterate rule for oe and ae

NOTE : I use HTML codes for special characters to avoir encoding issues in patch file.

In ICU configuration, add a transliterate rule for
œ = oe
æ = ae

Test plan :
- Without patch
- Create a record R1 with title containing for example "cœur"
- Create a record R2 with title containing for example "coeur"
- Index those records
- Search for "cœur"
=> You only find R1
- Search for "coeur"
=> You only find R2
- Apply patch
- Restart zebra
- Index R1 and R2
- Search for "cœur"
=> You find R1 and R2
- Search for "coeur"
=> You find R1 and R2
(Same test plan for ae)

------
Tested with all variants of Ae ae Oe oe. Search worked as expected.
Note: The words with special characters were not highlighted, but I think this can be done in an other bug.
Signed-off-by: Marc Veron <veron@veron.ch>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
(cherry picked from commit 9dbedfd854a255fc5f2e9479db96131ce87f2ee4)
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>