Truncated upgrade_dir_name ending with space conflicts with directory path

[JieXiong9119]

Bug found in comstock_measure_comparison.py under comstockpostproc

Description

When the upgrade dir name exceeeds 20 char and triggers the truncating operation in:

ComStock/postprocessing/comstockpostproc/comstock_measure_comparison.py

Line 41 in eea3ae0

upgrade_dir_name = upgrade_dir_name[:20] # Truncate name to avoid long filepath errors on Windows

it might end with space if the last char in upgrade_dir_name is space. The space tail will be automatically dumped in the generated directory but will stay in the path name and this conflict will cause "FileNotFoundError: [Errno 2] No such file or directory:".

Suggestion

Logic needs to be added to handle this scenario, so that the last space in truncated upgrade_dir_name would be removed to match the generated directory.