Add --schema and --exclude-schema options to vacuumdb.
These two new options can be used to either process all tables in
specific schemas or to skip processing all tables in specific
schemas. This change also refactors the handling of invalid
combinations of command-line options to a new helper function.
Author: Gilles Darold
Reviewed-by: Justin Pryzby, Nathan Bossart and Michael Paquier.
Discussion: https://postgr.es/m/
929fbf3c-24b8-d454-811f-
1d5898ab3e91%40migops.com