pgsql: Undo overly enthusiastic de-const-ification.

Undo overly enthusiastic de-const-ification.

s/const//g wasn't exactly what I was suggesting here ... parameter
declarations of the form "const structtype *param" are good and useful,
so put those occurrences back. Likewise, avoid casting away the const
in a "const void *" parameter.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/223be216afa13b708904ca1d72898f2ccf5cef40

Modified Files
--------------
src/backend/storage/lmgr/predicate.c | 71 +++++++++++++++++-----------------
1 files changed, 35 insertions(+), 36 deletions(-)