This is a placeholder issue to start working on converting primary and secondary menus to blocks.
Usability use case: http://sprint.drupalusability.org/content/main-menu-can-show-two-places
Background: http://hojtsy.hu/blog/2009-apr-09/mission-improve-page-regions-drupal-7 :
"3. Special main and secondary menu display of themes. Again, these are *already blocks*. Themes can just theme them differently when they are in their designated regions. Again, less theme settings, more visibility control, being able to swap menus in sections of the sites via other menu blocks, and so on."
FAILED: [[SimpleTest]]: [MySQL] Unable to apply patch primarymenu.patch. View
FAILED: [[SimpleTest]]: [MySQL] Unable to apply patch remove_primary_secondary.patch. View