Make sure merged libs are 0 bytes long.
Make sure merged libs are 0 bytes long.

If you build with --disable-mergelibs and then enable
--enable-mergelibs the existing library has its timestamp updated
but it retains its outdated contents.

Change-Id: I46899bcf3fe4f360fb12e8de8842c6ac12c6bf75

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