Bug #858: bitfromint4 not present in 7.3.1

Andrew Goldsmith (andrew.goldsmith@telstra.com) reports a bug with a severity of 2
The lower the number the more severe it is.

Short Description
bitfromint4 not present in 7.3.1

Long Description
I have installed a copy of PostgreSQL 7.3.1 from src on my Debian/Linux system.  The bitfromint4 function is no longer
recognised,e.g. when trying to call from psql command line: 
test=# select bitfromint4(4);
ERROR:  Function bitfromint4(integer) does not exist
        Unable to identify a function that satisfies the given argument types
        You may need to add explicit typecasts

Based on passed bug reports this was a known problem with 7.3b2
[http://archives.postgresql.org/pgsql-hackers/2002-10/msg00595.php]and doesn't seem to have been resolved for the
releasedversion. 

Sample Code


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