Git commits in Moodle 2.6.11 by Frederic Massart

commit 140b00007fa1cec25d1b08171790e70dfee46239
Author: Frederic Massart <fred@moodle.com>
Date:   Wed, 06 May 2015 16:29:48 +0800
Tag:    v2.6.11

MDL-50128 mod_data: String needed escaping before being used in regex

commit e691eeb160145143e0faf658b87f64575169ec23
Author: Frederic Massart <fmcell@gmail.com>
Date:   Thu, 05 Mar 2015 22:00:24 +0800
Tag:    v2.6.11

MDL-49179 setuplib: print_error() uses local URLs exclusively

commit d938689d19b2b678efd7cee9d37ecff54a251d1a
Author: Frederic Massart <fmcell@gmail.com>
Date:   Thu, 05 Mar 2015 16:30:52 +0800
Tag:    v2.6.11

MDL-49401 moodlelib: PARAM_LOCALURL supports loginhttps

commit a1895079cb3fde3b9a4d7d118878d0c7bc7b5aa4
Author: Frederic Massart <fmcell@gmail.com>
Date:   Wed, 04 Mar 2015 23:00:32 +0800
Tag:    v2.6.11

MDL-49179 weblib: Secure the direct usage of $_SERVER['HTTP_REFERER']

commit 2427771714f04745043cd420eece736de60c2a3f
Author: Frederic Massart <fmcell@gmail.com>
Date:   Wed, 04 Mar 2015 19:11:08 +0800
Tag:    v2.6.11

MDL-49179 mod_forum, mod_quiz: Prevent misuse of get_referer()