Обсуждение: pgsql: Various improvements to the GUC description strings.

Log Message:
-----------
Various improvements to the GUC description strings. Punctuate and
capitalize the strings like sentences. Remove unnecessarily
specific descriptions of the units used by GUC variables, since
we now allow any reasonable unit to be specified.

Modified Files:
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    pgsql/src/backend/utils/misc:
        guc.c (r1.360 -> r1.361)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c.diff?r1=1.360&r2=1.361)