Replace MySQL DATE_SUB() functions in SQLite sql_t() with the appropriate query code.  This uses a simple replacement to affect code in core, nothing fancier.
Replace MySQL DATE_SUB() functions in SQLite sql_t() with the appropriate query code.  This uses a simple replacement to affect code in core, nothing fancier.

git-svn-id: d0e296eae3c99886147898d36662a67893ae90b2@1332 653ae4dd-d31e-0410-96ef-6bf7bf53c507

dragonmantank/Habari,dragonmantank/Habari,dragonmantank/Habari