[vidhumahajan]

GitChangeLogParser keeps at most 1000 lines per commit and drops the rest without saying anything. The code had a TODO for this: "if we ignored some lines, tell the user so."

Now the parser counts the dropped lines for each commit and logs one warning with the commit id and the count, for example:

Ignored 5 lines of changelog for commit 123abc456def

Commits under the limit log nothing, and the parsed changesets are the same as before. The TODO is removed.

The count is passed as a plain string, so it doesn't get a locale-dependent thousands separator.

One thing I wasn't sure about: the changelog can be parsed again when a build is loaded, so the same warning may show up more than once for a big commit. I used WARNING so it's visible by default, but I'm happy to lower it to INFO or FINE if you think it's too noisy.

Testing done

New tests in GitChangeLogParserTest:

• a commit with 1005 lines logs exactly one warning saying 5 lines were ignored
• a commit with more than 1500 ignored lines shows the number without a separator
• a short commit logs nothing, even when listening at Level.ALL

GitChangeLogParserTest passes locally. I didn't run the full suite (not enough memory on my laptop), so I'm relying on CI for the rest.