Обсуждение: pgsql: Update comments in find_typedef.

Update comments in find_typedef.

These comments don't seem to have been touched in a long time.  Make them
describe the current implementation rather than what was here last century,
and be a bit more explicit about the unreferenced-typedefs issue.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/7aa8d9e56c18b1df9d924f144c06d921131a137e

Modified Files
--------------
src/tools/find_typedef |   37 ++++++++++++++-----------------------
1 file changed, 14 insertions(+), 23 deletions(-)