devel/subversion{,-lts}: Band-aid port option BDB and deprecate for removal

• Limit BDB to supported versions (4+) by Subversion only
• Pass mandatory configure option
• Band-aid when enabled for some combinations with devel/apr1 and bdb in DEFAULT_VERSIONS
• Deprecate it as it is deprecated upstream already for almost 12 years and about to be removed in 1.15

PR: 285495
Tested by: michaelo
Approved by: jrm (mentor)
Differential Revision: https://reviews.freebsd.org/D49406