Create Sector Tender

New design. Origin-based. Will stay in its own sector (including
descendants).
Add processor for testing.
Fix address out of range bug.

Shared memory starts at 1, not 0.
Change Sector Tender to message-based.

At start, bot 1 acts as controller. It receives all position
advertisements, averages them, then broadcasts an origin announcement.
All other bots broadcast their positions then wait for the origin
announcement.
Give Sector Tender bomb for testing.

Keep number down for easy debugging.
Fix Sector Tender stack overflow bug.

Normal add leaves half of vector on stack. Switched to vector add.
Make Sector Tender check for origin before running origin-finding routine.

Attempt to read it from shared memory before doing anything else. Make
controller write it to shared memory for offspring.
Fix Sector Tender indentation.
Add explanatory comments to Sector Tender.
Change Sector Tender shared memory naming convention.

From: origin-location
To: origin-address
Add sector-determining to Sector Tender.