vcl: more VclPtr debugging docs in the README.lifecycle.
vcl: more VclPtr debugging docs in the README.lifecycle.

Change-Id: I49d06d54157e1e7c5b7ce2aa3f8917763de6826d

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