WRKSRC. LIBTOOL_OVERRIDE defaults to "libtool */libtool and */*/libtool,"
meaning that, in most packages, there's no need to set it.
So: Nuke tons of LIBTOOL_OVERRIDE=${WRKSRC} and adjust a few
SHLIBTOOL_OVERRIDEs (remove ${WRKSRC} from them).
supports all versions starting from 3.0. It currently has a very limited set
of functions like to open a DB file, read its header and read every single
record. It can also extract blob data and write it to a file.
