smb: Use standard naming for setup connection function

Renamed smb_setup() to smb_setup_connection() to follow more widely
used function naming.
rtmp: Use standard naming for setup connection function

Renamed rtmp_setup() to rtmp_setup_connection() to follow more widely
used function naming.
openldap: Use standard naming for setup connection function

Renamed ldap_setup() to ldap_setup_connection() to follow more widely
used function naming.