MFC: r291073

If a NIS server has long entries on its database that is bigger than
1024 specified on YPMAXRECORD the ypmatch can get in an infinite retry
loop when is requesting the information from the NIS server.

The ypmatch(1) will return an error until the command receives an
kill(1).

To avoid this problem, we check the MAX_RETRIES that is by default set
to 20 and avoid get in infinet loop at the client side.

Submitted by: Ravi Pokala <rpokala at panasas.com>,

Lakshmi N. Sundararajan <lakshmi.n at msystechnologies.com>,
Lewis, Fred <flewis at panasas.com>,
Pushkar Kothavade <pushkar.kothavade at msystechnologies.com>