I forget to remove this obsolete patch
Add comment explaining that py-sqlite2 is for sqlite3.

(I'm assuming that if I can't follow this, at least some others will
be confused as well.)

This is a comment-only change.
Now that I understand that py-sqlite2 means sqlite3, adjust comments
about trac/ja-trac database differences (which I now perceive as smaller).
Try to fix a possible buffer overrun (CVE-2012-4428). Didn't find
a patch upstream nor anywhere else, hope this is correct. Someone
please review.
Being here, fix a memcpy() size bug on 64-bit systems.
bump PKGREV