Hard-coded PUBLIC in pg_dump

src/bin/pg_dump/pg_dump.c happen to have hard-coded PUBLIC role name.
It completly breaks dumps when run with Turksh locale setting. In my
opinion making it lower-case would do much good and no harm. A mini
patch is given below.

On the other hand, I was thinking about wrapping all the identifiers in
dump files in single quotes. It is done in "SET SESSION AUTHORIZATION"
clause. Is there a reason for not doing this with table and colum names?

Regards,
Nic

*** ./src/bin/pg_dump/pg_dump.c.orig Sun Dec 1 03:23:56 2002
--- ./src/bin/pg_dump/pg_dump.c Sun Dec 1 03:24:48 2002
***************
*** 4918,4924 ****
* wire-in knowledge about the default public privileges for different
* kinds of objects.
*/
! appendPQExpBuffer(sql, "REVOKE ALL ON %s %s FROM PUBLIC;\n",
type, name);

/* Make a working copy of acls so we can use strtok */
--- 4918,4924 ----
* wire-in knowledge about the default public privileges for different
* kinds of objects.
*/
! appendPQExpBuffer(sql, "REVOKE ALL ON %s %s FROM public;\n",
type, name);

/* Make a working copy of acls so we can use strtok */
***************
*** 4980,4986 ****
if (eqpos == tok)
{
/* Empty left-hand side means "PUBLIC" */
! appendPQExpBuffer(sql, "PUBLIC;\n");
}
else if (strncmp(tok, "group ", strlen("group ")) == 0)
appendPQExpBuffer(sql, "GROUP %s;\n",
--- 4980,4986 ----
if (eqpos == tok)
{
/* Empty left-hand side means "PUBLIC" */
! appendPQExpBuffer(sql, "public;\n");
}
else if (strncmp(tok, "group ", strlen("group ")) == 0)
appendPQExpBuffer(sql, "GROUP %s;\n",