Set default build version back to 1.5, mistakenly had it at 1.4
Set default build version back to 1.5, mistakenly had it at 1.4

git-svn-id: 46308aa6df3a13aea5930e6665b35c8b83c3a711@174 9fbd0cf9-a10c-0410-82c1-be8c084f3200

duck1123/java-xmltooling