Changed 'FArrayBox.define()' so that it now destroys any existing memory before allocation of new memory block.
Changed 'FArrayBox.define()' so that it now destroys any existing memory before allocation of new memory block.

ForestClaw/forestclaw,ForestClaw/forestclaw,ForestClaw/forestclaw,ForestClaw/forestclaw,ForestClaw/forestclaw,ForestClaw/forestclaw