By using an appropriate WHERE clause in the SQL statement,
we can avoid loading the whole dataset in getMetaData(),
which brings an welcome performance improvement with large
Metadata sets.

bugfix: NameIDs are created now as objects, so their information can't any longer be accessed as an array.

Fix XML validation failure with leading/trailing whitespace

Add missing 'required' value

Fixes:

Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] SimpleSAML_Error_Exception: Error 8 - Undefined index: required
Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] Backtrace:
Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] 4 /apps/simplesamlphp/simplesamlphp/www/_include.php:86 (SimpleSAML_error_handler)
Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] 3 /apps/simplesamlphp/simplesamlphp/modules/core/templates/frontpage_config.tpl.php:91 (require)
Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] 2 /apps/simplesamlphp/simplesamlphp/lib/SimpleSAML/XHTML/Template.php:405 (SimpleSAML_XHTML_Template::show)
Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] 1 /apps/simplesamlphp/simplesamlphp/modules/core/www/frontpage_config.php:198 (require)
Aug  8 20:44:18 simplesamlphp-2 IDP-MOO[3845]: 3 [d01bee1f99] 0 /apps/simplesamlphp/simplesamlphp/www/module.php:135 (N/A)

Class name typo causes fatals on some pages

This would mean that any code using this helper function could not
use the ldap.filter option. It's a followup to commit
ff5497e9 which fixed this for the
`login()` method but not for the `searchfordn()` method.

added exception logging for federation lookups

Be gentle with weird implementations that set $_SERVER['HTTPS'] to null.

SAMLBuilder AttributeAuthorityDescriptor empty protocolSupportEnumeration

Remove sensitive data from logs during LDAP filters

This reverts commit 82a46a7c.

This removes the dependency on mcrypt for good, closes #660 and resolves #615.

We've just been moved from Precise to Trusty, and PHP 5.3 is not available in the latter, so builds fail.

Otherwise, a theme would not be able to include/embed/extend its own templates.

Also tweak wording of artifact idp docs a bit re memcache extension.

Memcached extension support

Adds further support for php-memcached.