Maintenance releases for Sphider

Sphider release 2.0.1 has some code cleanup and a jquery update.

PDO Sphider, Sphider for PostgreSQL, and Sphider for SQLite are at release 2.0.2. While these too have some code cleanup and jquery update, they are mainly to correct a few problems introduced by release 2.0.1!

No change to the functionality is involved in these releases. They are mainly to clean up a few messy items, although the PDO versions 2.0.1 did correct some problems with database error reporting. Those changes are included in 2.0.2.