contrib: add copyright for my scripts
contrib/ChangeLog:
* analyze_brprob.py: Add copyright header.
* analyze_brprob_spec.py: Likewise.
* check-params-in-docs.py: Likewise.
* check_GNU_style.py: Likewise.
* check_GNU_style_lib.py: Likewise.
* filter-clang-warnings.py: Likewise.
* gcc-changelog/git_check_commit.py: Likewise.
* gcc-changelog/git_commit.py: Likewise.
* gcc-changelog/git_email.py: Likewise.
* gcc-changelog/git_repository.py: Likewise.
* gcc-changelog/git_update_version.py: Likewise.
* gcc-changelog/test_email.py: Likewise.
* mark_spam.py: Likewise.
13 files changed: