CppunitTest_sw_ooxmlimport: use exact value from bugdoc in testMceNested()
CppunitTest_sw_ooxmlimport: use exact value from bugdoc in testMceNested()

Bugdoc has 2514600 EMU's as the vertical position, use that, and allow
larger values, as originally this was 0, and we have additional 2 mm100,
probably due to rounding errors.

Change-Id: I7495a0f9e913332a24d0a830b0252ecb6a39d806

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