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Clean up phase names a little
Fix phase names in VideoCore options
Update the sample config.sh to reflect the new options and
start hinting at the possibility of manipulating the strategy list
directly.
Bring a bunch of boards into the new strategy world;
define a default IMAGE_SIZE for all boards.
Compute the TARGET and include that in the specified XDEV build command.
Remove the never-implemented swap function.
Add -b option, remove some dead code, refactor a few things.