BUG #5741: syslog line length

The following bug has been logged online:

Bug reference: 5741
Logged by: heasley
Email address: heas(at)shrubbery(dot)net
PostgreSQL version: 8.4
Operating system: solaris
Description: syslog line length
Details:

* Max string length to send to syslog(). Note that this doesn't count the
* sequence-number prefix we add, and of course it doesn't count the prefix
* added by syslog itself. On many implementations it seems that the
hard
* limit is approximately 2K bytes including both those prefixes.
*/
#ifndef PG_SYSLOG_LIMIT
#define PG_SYSLOG_LIMIT 1024
#endif

solaris' syslogd limits the line length to 1024, with a
FQDN and it's silly "msg ID" quite a bit is dropped by
syslogd.