pgsql: Improve markup of cmdsynopsis elements

Improve markup of cmdsynopsis elements

Add more markup in particular so that the command options appear
consistently in monospace in the HTML output.

On the vacuumdb reference page, remove listing all the possible
options in the synopsis.  They have become too many now; we have the
detailed options list for that.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/4266509c577b089627930af39f1dcd2d06b493e9

Modified Files
--------------
doc/src/sgml/ref/clusterdb.sgml    |    8 +-
doc/src/sgml/ref/createlang.sgml   |    2 +-
doc/src/sgml/ref/droplang.sgml     |    2 +-
doc/src/sgml/ref/initdb.sgml       |    8 ++-
doc/src/sgml/ref/pg_ctl-ref.sgml   |  112 ++++++++++++++++++------------------
doc/src/sgml/ref/pg_resetxlog.sgml |   16 +++---
doc/src/sgml/ref/reindexdb.sgml    |   26 +++++++-
doc/src/sgml/ref/vacuumdb.sgml     |   24 ++++----
8 files changed, 109 insertions(+), 89 deletions(-)