Fixes primitives ordering in glesUtil VertexAccessOrderVisitor

The reason is that osgUtil::TriStripVisitor changes the primitive ordering in
1. Lines
2. Triangle strips
3. Triangles

Since the glesUtil::VertexAccessOrderVisitor now takes into account Lines and
Points the primitive ordering is important. Wireframe lines should always be
pretransformed **after** the triangles they represent.
Merge pull request #27 from mrchlblng/bug/primitive-ordering

Fixes primitives ordering in glesUtil VertexAccessOrderVisitor