pgsql: Updates to reflect that pg_ctl stop -m fast is the default

Updates to reflect that pg_ctl stop -m fast is the default

Various example and test code used -m fast explicitly, but since it's
the default, this can be omitted now or should be replaced by a better
example.

pg_upgrade is not touched, so it can continue to operate with older
installations.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/e574f15d6295b12c03ef8810c00976b65933711a

Modified Files
--------------
contrib/start-scripts/freebsd | 4 ++--
contrib/start-scripts/linux | 4 ++--
contrib/start-scripts/osx/PostgreSQL | 4 ++--
doc/src/sgml/ref/pg_ctl-ref.sgml | 2 +-
src/bin/pg_ctl/t/001_start_stop.pl | 10 +++++-----
src/bin/pg_ctl/t/002_status.pl | 2 +-
src/test/regress/pg_regress.c | 2 +-
src/tools/msvc/vcregress.pl | 4 ++--
8 files changed, 16 insertions(+), 16 deletions(-)