Packaged themes should make use of comments_open() and pings_open()

[coffee2code]

Since comments_open() and pings_open() have been around for awhile, the packaged themes should make use of them instead of doing something like 'open' == $post->comment_status. The latter is exposes too much internal workings and is not filterable.

The comments.php file for the classic theme makes use of these calls, but classic/comments-popup.php does not. And for the default theme, neither comments.php nor comments-popup.php make use of the functions.

The attached patch modifies those three theme files to make use of comments_open() and pings_open() where appropriate.

[coffee2code]

I've replaced my original diff with an amended version that also makes the comments_open() and pings_open() change to the default theme's image.php and single.php files. That should round things out.

[coffee2code]

Amended patch

[ryan]

(In [10978]) Use comments_open() and pings_open() in packaged themes. Props coffee2code. fixes #9556