Git commits in Moodle 1.9.3 by pichetp

commit edcf8249534c28337e8f5fe71685ea2cc5cebd20
Author: pichetp <pichetp>
Date:   Sat, 20 Sep 2008 22:07:47 +0800
Tag:    v1.9.3

MDL-16427 implement the '*' convention as for other questiontypes

commit 7564f1d0950daf193ced81745bd7672637a993ad
Author: pichetp <pichetp>
Date:   Sat, 20 Sep 2008 22:01:51 +0800
Tag:    v1.9.3

merge from HEAD MDL-15358 negative data from datasets between ()

commit 253df4f69b222a644ab6a0863cea63cb45c5c03a
Author: pichetp <pichetp>
Date:   Thu, 18 Sep 2008 22:37:50 +0800
Tag:    v1.9.3

MDL-16427 changing $answer=='*' to $answer ==='*'

commit 04ed1cebd7265c30c86bcc15b80273ff2bd6b099
Author: pichetp <pichetp>
Date:   Wed, 03 Sep 2008 23:22:46 +0800
Tag:    v1.9.3

Improving multichoice display MDL-14763 merging from HEAD

commit 605d0b0c49f2df48a5d4294d7248cab97d82092a
Author: pichetp <pichetp>
Date:   Fri, 15 Aug 2008 19:22:35 +0800
Tag:    v1.9.3

better filtering of null answers MDL-8475 merged from HEAD

commit 95c8fddc7df40fae7fcb33cd9e4cc628dd0a2404
Author: pichetp <pichetp>
Date:   Thu, 14 Aug 2008 19:39:03 +0800
Tag:    v1.9.3

better validation of null answers MDL-8475 merged from HEAD