Allow empty initial rows and columns.
Allow empty initial rows and columns.

git-svn-id: https://svn.sable.mcgill.ca/mclab/Project@492 89b902b4-d83f-0410-b942-89f7a419ffdb

Migrated from Sable/mclab@a0e9963dbdf0328922469b5d17f54c42ffab3bb6

Sable/mclab-core,Sable/mclab-core,Sable/mclab-core,Sable/mclab-core,Sable/mclab-core,Sable/mclab-core,Sable/mclab-core,Sable/mclab-core