Only '(' and ':' currently terminate file lists in ChangeLog entries
in the ChangeLog parser. This rules out such legitimate entries as:
* filename <CASE>:
* filename [COND]:
This patch extends the ChangeLog parser to recognize these forms.
for contrib/ChangeLog
* gcc-changelog/git_commit.py: Support CASE and COND.
* gcc-changelog/test_patches.txt: Add test.
* gcc-changelog/test_email.py: Add test.
Co-Authored-By: Martin Liska <mliska@suse.cz>
