Some comment changes;  consistent naming of routines (using 'step1', 'step2', 'step3') for exchanging/setting boundary information.
Some comment changes;  consistent naming of routines (using 'step1', 'step2', 'step3') for
exchanging/setting boundary information.

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