Add the ability to dump the plan out into the log when explain is requested.
Useful for generating debug explains off of a catalog which has no p sites present.
Add copyright header.
Merge branch 'master' into kanzaros_cta
Fix PE-1668.
- Do not rewrite UUID call upon translation.  Instead, leave it in place and rewrite it upon normalization
  if it occurs in an insert into values statement.
- Add a list of UUID values to the ConnectionValues, arrange for it to be reset appropriately.
Merge branch 'master' into kanzaros_cta