y

Descriptions of the changes in this PR:
Handle handle non-ascii chars in username in merge script.

---
Be sure to do all of the following to help us incorporate your contribution
quickly and easily:

- [X] Make sure the PR title is formatted like:
    `<Issue # or BOOKKEEPER-#>: Description of pull request`
    `e.g. Issue 123: Description ...`
    `e.g. BOOKKEEPER-1234: Description ...`
- [X] Make sure tests pass via `mvn clean apache-rat:check install findbugs:check`.
- [X] Replace `<Issue # or BOOKKEEPER-#>` in the title with the actual Issue/JIRA number.

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Author: jiazhai <zhaijia@live.com>

Reviewers: Enrico Olivelli <eolivelli@apache.org>

This closes #242 from jiazhai/issue_241

dev/bk-merge-pr.py

@@ -447,7 +447,7 @@ def get_reviewers(pr_num):
             username = user['name'].strip()
         if username is None:
             continue
-        reviewers_emails.append('{0} <{1}>'.format(username, useremail))
+        reviewers_emails.append('{0} <{1}>'.format(username.encode('utf8'), useremail))
     return ', '.join(reviewers_emails)
 
 def main():