Claromentis 5.1 configuration

1. New searching system and so new indexing daemon.
Cla 5.1 requires new indexing daemon to be installed
Due to changed indexing, now database size is much smaller than data storage. And data storage has grown by about 50% comparing to version 5.0. I remind that previously database size was about twice larger than actual documents size.

2. LDAP/NTLM configuration
Cla 5.1 now supports multiple domains if they are within one LDAP tree and Cla is installed on Windows. Also now it's possible to have local accounts and LDAP/NTLM accounts at the same time.
Due to these changes, directory security settings are different in IIS. Now it's needed to allow anonymous access to web/intranet/ folder and only disallow it to web/intranet/login/ folder.
There are also different configuration variables in config file.NTLM and LDAP are switched on and off indepentently of each other. $NTLM_MODE has only options NTLM_NONE, NTLM_IIS and NTLM_APACHE.New variable $cfg_LDAP_enabled enables LDAP support. Prefix $cfg_ added for all other LDAP variables. See config_default.php
Enabling LDAP now requires valid LDAP account to be entered into config file. See variables $cfg_LDAP_user and $cfg_LDAP_password in config_default.php
New settings $cfg_preferred_login_method, has effect only if NTLM is enabled. Claromentis may automatically redirect users to NTLM autologon or first show them usual web form for log in and let them click "Log on using you MS Windows account". This is useful if local and LDAP users are used.