These types have been deprecated for a *long* time.

Catversion bump, for obvious reasons.

Author: Andres Freund
Discussion:
    https://postgr.es/m/20181009192237.34wjp3nmw7oynmmr@alap3.anarazel.de
    https://postgr.es/m/20171213080506.cwjkpcz3bkk6yz2u@alap3.anarazel.de
    https://postgr.es/m/25615.1513115237@sss.pgh.pa.us

in UPDATE. We also now issue a NOTICE if a query has _any_ implicit
range table entries -- in the past, we would only warn about implicit
RTEs in SELECTs with at least one explicit RTE.

As a result of the warning change, 25 of the regression tests had to
be updated. I also took the opportunity to remove some bogus whitespace
differences between some of the float4 and float8 variants. I believe
I have correctly updated all the platform-specific variants, but let
me know if that's not the case.

Original patch for DELETE ... USING from Euler Taveira de Oliveira,
reworked by Neil Conway.

Modify the timestamp test to reflect the "no time zone" behavior of this
 new code; timestamptz resembles the old timestamp code.

 regression tests for specific types, and move a few others to the
 cross-type "horology" test.
Rearrange the test order slightly, and move the abstime test to the
 "parallel safe" area.
Hand-patch the results for "1947" and for "solaris", so those may not
 be exactly correct.

Remove older "::" type coersion syntax in favor of extended SQL92 style.
Include a few new tests for datetime/timespan arithmetic.

Add regression tests for circles, line segments, and paths.
Modify regression tests to allow GEQ optimizer (order results).