pgsql: Clean up the mess from => patch.

Clean up the mess from => patch.

Commit 865f14a2d31af23a05bbf2df04c274629c5d5c4d was quite a few bricks
shy of a load: psql, ecpg, and plpgsql were all left out-of-step with
the core lexer.  Of these only the last was likely to be a fatal
problem; but still, a minimal amount of grepping, or even just reading
the comments adjacent to the places that were changed, would have found
the other places that needed to be changed.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/2fbb286647fac2014abdf2fbf6c7b4134be91602

Modified Files
--------------
src/bin/psql/psqlscan.l              |    5 +++++
src/include/parser/scanner.h         |    2 +-
src/interfaces/ecpg/preproc/parse.pl |    3 ++-
src/interfaces/ecpg/preproc/pgc.l    |    2 ++
src/pl/plpgsql/src/pl_gram.y         |    2 +-
5 files changed, 11 insertions(+), 3 deletions(-)