i#4953 ubuntu20: Explicily invoke python2 for clang-format-diff (!5095) · Merge requests · DynamoRIO / dynamorio

Merged Derek Bruening requested to merge i4953-clang-format-python into master Sep 16, 2021

Locates python2 and uses it to invoke clang-format-diff for 6.0, to support running that old version on Ubuntu 20.