pgsql: psql: Tab completion for renaming enum values.

psql: Tab completion for renaming enum values.

For ALTER TYPE .. RENAME, add "VALUE" to the list of possible
completions.  Complete ALTER TYPE .. RENAME VALUE with possible
enum values.  After that, complete with "TO".

Dagfinn Ilmari Mannsåker, reviewed by Artur Zakirov.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/577f0bdd2b8904cbdfde6c98f4bda6fd93a05ffc

Modified Files
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src/bin/psql/tab-complete.c | 58 +++++++++++++++++++++++++++++++++++++++++----
1 file changed, 54 insertions(+), 4 deletions(-)