Changed "Free" to "Open", Java build configs, port directory added, intellij idea5.1 project file added

Changed "Free" to "Open", Java build configs, port directory added, intellij idea5.1 project file added

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@25 67173fc5-114c-0410-ac8e-9d2fd5bffc1f