[ns] using a modified ns-lib.tcl

[gmc50 <gmc50@it.canterbury.ac.nz>]

Hi ns users,

I am trying to make some changes to the ns-lib.tcl file but since we are using 
a central common copy (read only) of ns stored in the server, I need to store 
this modified ns-lib.tcl file in my own directory and use this modified file 
instead of the original ns-lib.tcl.

However, after I source the new ns-lib.tcl in my make file and remove the path 
to the original ns-lib.tcl from the make file, I successfully run make but 
still end up using the original ns-lib.tcl file when I run a tcl script. Do I 
need to change something else?

Thanks a lot,

Gustavo.