Match whole word option in Find/Replace dialog should capture words next to punctuation marks.

[martinkou]

This minor bug was discovered whiled working on #2150.

To reproduce:

1. Open sample01.html.
2. Type in "Hello, World!" at the end of the paragraph.
3. Open the Find dialog.
4. Try to find "hello" with the match whole word option ticked.
5. The "hello" word is not found, because it is next to a comma.

This issue will be fixed in the final patch to #2150.

[martinkou]

Fixed along with #2150.