Update HibernateCriteriaBuilder.java

fixed the issue http://jira.grails.org/browse/GRAILS-10116
changed 
if (direction.equals(ORDER_DESCENDING)) {
TO
if (direction.equalsIgnoreCase(ORDER_DESCENDING)) {
Merge pull request #126 from psramkumar/patch-1

Update HibernateCriteriaBuilder.java