Clarify that BURI does not imply burial

[tychonievich]

While defined to mean "the event of disposing of the mortal remains of a person who has died" since 3.0, the tag name "burial" led this to be mis-interpreted.

I think this resolves #309

[dthaler]

Discussion in 6/1 GEDCOM Steering Committee:

Use of CREM today allows an application to understand that it is a cremation, and generate reports in the user's language and use the appropriate word for cremation.

BURI.TYPE Cremation uses human-entered text and so is not reliably machine-recognizable and so cannot be as usable as above, since it results in either the word Cremation appearing literally in a non-English report, which some users find confusing, or omitting the information from the report which thus loses information as far as human readability goes.

A third possibility would be to add another enumeration, rather than using TYPE , where Cremation is an enumeration value. This would also solve the localization problem, but would require changes to add the enumset and a tag to put it in.

[dthaler]

I do find it confusing to see BURI in both line 17 and line 23, with two different definitions, both saying since 3.0. Perhaps line 17 shouldn't be BURI, since there was no tag specifically for burial, as opposed to depositing remains in general?

[tychonievich]

I was trying to mirror what we did with NATI