Adding upstream version 3.1.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/features/fixture_data/help_commands.txt

@@ -0,0 +1,64 @@
+Command
+Description
+\#
+Refresh auto-completions.
+\?
+Show Commands.
+\T [format]
+Change the table format used to output results
+\c[onnect] database_name
+Change to a new database.
+\copy [tablename] to/from [filename] 
+Copy data between a file and a table.
+\d[+] [pattern]
+List or describe tables, views and sequences.
+\dT[S+] [pattern]
+List data types
+\db[+] [pattern]
+List tablespaces.
+\df[+] [pattern]
+List functions.
+\di[+] [pattern]
+List indexes.
+\dm[+] [pattern]
+List materialized views.
+\dn[+] [pattern]
+List schemas.
+\ds[+] [pattern]
+List sequences.
+\dt[+] [pattern]
+List tables.
+\du[+] [pattern]
+List roles.
+\dv[+] [pattern]
+List views.
+\dx[+] [pattern]
+List extensions.
+\e [file]
+Edit the query with external editor.
+\h
+Show SQL syntax and help.
+\i filename
+Execute commands from file.
+\l
+List databases.
+\n[+] [name] [param1 param2 ...]
+List or execute named queries.
+\nd [name]
+Delete a named query.
+\ns name query
+Save a named query.
+\o [filename]
+Send all query results to file.
+\pager [command]
+Set PAGER. Print the query results via PAGER.
+\pset [key] [value]
+A limited version of traditional \pset
+\refresh
+Refresh auto-completions.
+\sf[+] FUNCNAME
+Show a function's definition.
+\timing
+Toggle timing of commands.
+\x
+Toggle expanded output.