Restore blank line after <?php tags

Recent commits changed all the PHP files from:

      <-- blank line here
/**
 * @file
 * Pathauto integration for core modules.
 *
 * @ingroup pathauto
 */

// Rest of file...

to

/**
 * @file
 * Pathauto integration for core modules.
 *
 * @ingroup pathauto
 */

// Rest of file...

I find this change unnecessary and sticks out like a sore thumb when first opening a file. We don't have a specific coding standard regarding this specific detail (blank lines after opening PHP tag), but I always think it is best to follow the example set by core, which always has blank line after it's opening PHP tag and the first line of code/docs. I find it is more readable this way too. I'd like to revert this change.