BUG #14152: pg_dump does not take into account previous versions reserved keywords as column names

The following bug has been logged on the website:

Bug reference: 14152
Logged by: Alejandro Martínez
Email address: alejandro(at)cartodb(dot)com
PostgreSQL version: 9.5.3
Operating system: Windows
Description:

Steps to reproduce:

- Have a 9.3.13 cluster
- On that database run: CREATE TABLE test(foo int, "over" test, bar int);.
Note that "over" is a keyword which apparently went from reserved to
non-reserved on 9.4 release.
- Use a 9.5.3 pg_dump to dump the database.

It fails with:

pg_dump: [archiver (db)] query failed: ERROR: syntax error at or near
"over"
LINE 1: COPY public.test (foo, over, bar) TO stdout;
^
pg_dump: [archiver (db)] query was: COPY public.test (foo, over, bar) TO
stdout;

Using a 9.3 pg_dump will quote the "over" column name and properly finish
the dump.