Add Hunspell support to the build script.

Changed default data installation folders.

Open-webOS-DCO-1.0-Signed-off-by: Igor Kuksyuk <ikuksyuk@luxoft.com>

Change-Id: Ib0cc6cd48295c64a006baf0602c68f9978d1d575
Reviewed-on: https://g2g.palm.com/1772
Reviewed-by: Build Verification
Reviewed-by: Igor Kuksyuk <ikuksyuk@luxoft.com>
Tested-by: Igor Kuksyuk <ikuksyuk@luxoft.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>