i#120055 Prevent crash caused by un-disposed secondary item pool.
i#120055 Prevent crash caused by un-disposed secondary item pool.

Conflicts:
	svl/source/items/itempool.cxx

Adapted to new pImp implementation. (erAck)

Change-Id: I106f0dc41bc8f41d394d680fe89a8fee6a2f508a

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core