Обсуждение: pgsql: Code + docs review for escaping of option values (commit 11a020e

Code + docs review for escaping of option values (commit 11a020eb6).

Avoid memory leak from incorrect choice of how to free a StringInfo
(resetStringInfo doesn't do it).  Now that pg_split_opts doesn't scribble
on the optstr, mark that as "const" for clarity.  Attach the commentary in
protocol.sgml to the right place, and add documentation about the
user-visible effects of this change on postgres' -o option and libpq's
PGOPTIONS option.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/cbc8d65639344c390a1d1a7f646c186ff3ad8693

Modified Files
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doc/src/sgml/libpq.sgml            |    9 ++++++---
doc/src/sgml/protocol.sgml         |   12 ++++++------
doc/src/sgml/ref/postgres-ref.sgml |   14 ++++++++++----
src/backend/utils/init/postinit.c  |   11 ++++++-----
src/include/miscadmin.h            |    2 +-
5 files changed, 29 insertions(+), 19 deletions(-)