pgsql: Update wording: < Currently, ALTER USER and ALTER DATABASE

Log Message:
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Update wording:

< Currently, ALTER USER and ALTER DATABASE support per-user and

Currently ALTER USER and ALTER DATABASE support per-user and

< Currently, subtracting one date from another that crosses a

Currently subtracting one date from another that crosses a

< Currently, SQL-language functions can only refer to parameters via $1, etc

Currently SQL-language functions can only refer to dollar parameters,
e.g. $1

< Currently, queries prepared via the libpq API are planned on first

Currently queries prepared via the libpq API are planned on first

< Currently, SET <tab> causes a database lookup to check all

Currently SET <tab> causes a database lookup to check all

< Currently, all statement results are transferred to the libpq

Currently all statement results are transferred to the libpq

Modified Files:
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pgsql/doc:
TODO (r1.2098 -> r1.2099)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.2098&amp;r2=1.2099)
pgsql/doc/src/FAQ:
TODO.html (r1.599 -> r1.600)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.599&amp;r2=1.600)