Fix for issue #102008 (_ldapauth_user_lookup fails when $name is not the first uid, mac osx os x multiple short names)

- Fixed issue #87831 ("Users can login using any number of space characters as a password"), that I cannot reproduce, but is (critically) troubling some people

- 4 1/2 months later, I am fixing issue #64899 ("Users can create a second account for themselves by adding a space before their username"), marked as "critical"
- Fixed issue #87833 ("Support lowercase attribute names"), reported by Gribnif

- (Initial support) groups can be now LDAP entries containing theis users in a multivalued attribute

- Some strings fixed

- Several LDAP attributes can hold group memberships.
- Changed how group/role mapping works: now roles are created if they didn't exist, and mappings are specified in conf.php.
- Passwords may be encrypted when written to LDAP.

  mapping (feature request #27640).
- LDAP groups can now map to Drupal roles.
- Settings should make a bit more sense now.
- hook_user() re-implementation. I hope this is the right one now.

  (Thanks sfrancis)
- Minor fixes

- Stupid bug related to TLS solved

- Added TLS authentification between Drupal and LDAP servers. (Thanks sfrancis)
- AD authentication fixes. (Thanks sfrancis)
- PHP5 fixes

- (PATCHED) Bug #28551: Authentication fails: Issues with global variable $con?
- Minor changes in code