(ITS#4774) Add network timeout option to ldapsearch

[lukeh@padl.com]

Full_Name: Luke Howard
Version: HEAD
OS: 
URL: http://www.padl.com/~lukeh/openldap-HEAD-nto.diff
Submission from: (NULL) (203.13.32.80)


A customer had requested we add an option to ldapsearch to allow a network
timeout to be specified on the command line. 

A patch against HEAD is attached.

I am aware that you can specify NETWORK_TIMEOUT in ldap.conf, and that free
command line options are precious.