pgsql: Fix pgbench's failure to honor the documented long-form option "

Fix pgbench's failure to honor the documented long-form option "--builtin".

Not only did it not accept --builtin as a synonym for -b, but what it did
accept as a synonym was --tpc-b (huh?), which it got even further wrong
by marking as no_argument, so that if you did try that you got a core
dump. I suppose this is leftover from some early design for the new
switches added by commit 8bea3d221, but it's still pretty sloppy work.

Per bug #14580 from Stepan Pesternikov. Back-patch to 9.6 where the
error was introduced.

Report: https://postgr.es/m/20170307123347.25054.73207@wrigleys.postgresql.org

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/ef2662394455578f6c57e99a7896c69bdd9fbd74

Modified Files
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src/bin/pgbench/pgbench.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)