Switch post type and tax capabilities to a single 'cap' property
|Reported by:||nacin||Owned by:|
$pt->cap->edit_post $pt->cap->edit_posts $pt->cap->edit_others_posts
By basing them off what they are called for posts, we reduce confusion significantly (it's also the default) and we prevent errors like  which caused quite a headache, and MarkJaquith and I spent maybe an hour tracking that down.
Patches welcome, otherwise I'll get to it.