- forgot to remove autogen.sh previously along with the rest of the autotools

- forgot to remove autogen.sh previously along with the rest of the autotools
stuff
- removed other random build files that have accumulated over time. Kdevelop
project files, microsoft nmake files, etc.

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1128 7f0cb862-5218-0410-a997-914c9d46530a