GLLINES GLLINES Create a GL Lineset

Usage

Defines a set of lines that can be treated as a node.
A GL Lines is defined by a vector consisting of the
following elements:

   [m1 x1 y1 z1 ... xn yn zn m2 x1 y1 z1 .... ]

i.e., a point count followed by that number of triplets.
The usage of this function is 

  gllines(name,vector,color)

where name is the name of the lineset and vector
is the aforementioned vector of points.
