Inserts the declaration on the 1st or 2nd line of scripts.

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Short license declarations for .sh files

Inserts the declaration on the 1st or 2nd line of scripts.

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Revert "Short license declarations for .sh files"

This reverts commit d3dd8608.

Uses SPDX identifier

Modifies declaration to use SPDX license identifier syntax

Corrects file

Empty line before hashbang removed

Don't download the external packages when running the code format checker.
This improves the run time from more than 4 minutes to less than  1 minute.
Test each file individually such that the results on CDash are shown for each
file separately.