Improving default names for tgz files in MadGraphControl

It's more clear for users if things that are .tar.gz files have extensions that look like .tar.gz, instead of no extension at all. Implementing that in the two places where we weren't as clear as we should have been.

Thanks to @tpelzer for the suggestion.

added Generators label

This merge request affects 1 package:

• Generators/MadGraphControl

This merge request affects 1 file:

• Generators/MadGraphControl/python/MadGraphUtils.py

Adding @caiy ,@zmarshal as watchers

added main review-pending-level-1 labels

WARNING: big files (>100K) are found in the changeset

120K in file Generators/MadGraphControl/python/MadGraphUtils.py

CI Result SUCCESS (hash 62aaa67c)

	Athena	AthGeneration
externals
cmake
make
tests

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added review-approved label and removed review-pending-level-1 label

Changes and CI look fine. Approving.

Kira (L1)

merged

mentioned in commit 6ea708de