pgsql: Add description of long options for '-c', '-D', '-l' and '-s'.

Add description of long options for '-c', '-D', '-l' and '-s'. Per
discussion of hackers list on 2012/3/10 "missing description initdb
manual".

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/d4db16d303b24ba5c9a6ddf8c2d70f6fd2da36d7

Modified Files
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doc/src/sgml/ref/pg_ctl-ref.sgml | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)