Constant links
Constant links can be handled this way too:
const(5.3E-3)
const(IOC Rebooted)
The recGblInitConstantLink routine is not needed, a constant link LSET provides a get routine as normal.
The first time it is asked for a value as some DBF_XXX type by the record, it attempts to convert its address string to that type.
Subsequent get requests return Ok but do nothing.
A better solution allows record VAL fields to be set from the DCTs, but this proposal allows automatic conversion of existing databases without having to provide details of each record type.
We should do both initially, but plan to phase out const links in the next version (giving time to change existing databases, especially CapFast users who may have to make manual changes).