documentation references invalid -A assertion checks option

Both the documentation
(http://www.postgresql.org/docs/9.4/static/app-postgres.html) and the
--help switch to postgres reference a -A switch to handle assertion
checking. Looking at the code, I don't see any entry for -A in the
getopt string and passing -A always fails with 'invalid option'
regardless of the compile time setting. If I'm right, either the docs
or the source need to be patched. The question is, which one? (I
vote to remove references to the option).

merlin