Use hook_url_outbound_alter() instead of hook_preprocess_link()

Problem/Motivation

If links created using the l() function are not run through the theme system and instead rendered inline (as when the system variable theme_link = FALSE), then content_lock_preprocess_link() will not be invoked and links like the edit link in the Content Overview form will not contain the necessary token.

Proposed resolution

Use content_lock_url_outbound_alter() instead of content_lock_preprocess_link() to manipulate the query options on links.

Remaining tasks

None

User interface changes

None

API changes

None

Data model changes

None