PATCH: Add network-timeout parameter in back-meta (ITS#2413)

[kkalev@noc.ntua.gr]

Full_Name: Kostas Kalevras
Version: HEAD
OS: Linux
URL: http://users.ntua.gr/kkalev/ldap/network_timeut.patch
Submission from: (NULL) (147.102.220.43)


Since back-meta does not set an LDAP_OPT_NETWORK_TIMEOUT option before
connecting to an ldap server there can be large delays in case the corresponding
ldap server is down. This patch adds a network-timeout <seconds> parameter to
back-meta to be passed as an LDAP_OPT_NETWORK_TIMEOUT option before connecting
to an ldap server.