Several projects where the defaults block layout was incorrect although it had the same default block numbers.

[d-mitch-bailey]

This may have been caused by older versions of the defaults blocks that existed in the user mag directory at the time the script was run. The script does not create a new file if there is an existing file.

PR #102 for caravel should fix this.

[DavidRLindley]

Only need to check production code matches offline development scripts. LVL of both flows output.

[jeffdi]

new gpio check from Mitch should check gds. also need to roll change to script to delete previous default blocks.