OK, I’ve re-licensed apr_dbd_mysql to permit distribution under the ASL 2.0 when aggregated with APR-UTIL. Due to the licensing incompatibility, this is necessary if it is to be aggregated. Which in turn makes life easier for end-users.
This follows recent discussion with the Debian packagers. The original problem is discussed in more detail here.
Apache/APR MySQL Driver « niq’s soapbox said
[...] It looks different to last time it was discussed. We can still argue over whether the driver or anything else is a derived work within the meaning of the GPL. But we don’t really need to: we have MySQL’s FOSS “exception” explicitly sanctioning what we want to do. And we’ve reviewed it in the context of Debian bundling the driver. [...]