Correction to makefile for tetgen in Linux


git-svn-id: http://svn.code.sourceforge.net/p/texgen/code/TexGen/trunk@832 30a87d8f-2915-0410-af07-a33f4da36df8
Bug fix for if GetNode is called without interpolation being initialised

git-svn-id: http://svn.code.sourceforge.net/p/texgen/code/TexGen/trunk@833 30a87d8f-2915-0410-af07-a33f4da36df8
Merge remote-tracking branch 'git-svn'