Beginner hacker item: Fix to_reg*() input type

All the to_reg* functions in src/backend/utils/adt/regproc.c currently
accept a cstring. Per [1], they should accept text. This should be a
fairly simple change to make:

- Modify the functions in regproc.c. Take a look at how other text input
functions work to see what needs to happen here (you'll want to use
text_to_cstring() as part of that.)

- Modify the appropriate entries in src/include/catalog/pg_proc.h

[1] http://www.postgresql.org/message-id/29618.1451882238@sss.pgh.pa.us.
Note that I mistakenly referred to reg*in functions in that email; it's
the to_reg* functions that need to change.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com