Update install scripts

Don't build NOX and OVS as root.  Also don't nuke kernel src.  Install
newer autoconf needed for OVS install from Deb backports, not src.

util/deb/install_nox.sh

@@ -2,12 +2,6 @@
 #Brandon Heller (brandonh@stanford.edu)
 #Install NOX on Debian Lenny
 
-#Install NOX deps:
-sudo apt-get -y install autoconf automake g++ libtool python python-twisted swig libboost1.35-dev libxerces-c2-dev libssl-dev make
-
-#Install NOX optional deps:
-sudo apt-get install -y libsqlite3-dev python-simplejson
-
 #Install NOX:
 git clone git://noxrepo.org/noxcore
 cd noxcore
@@ -19,4 +13,4 @@ make
 #make check
 
 #Add NOX_CORE_DIR env var;; modify ~/.bashrc:
-sudo sed -i -e 's|# for examples$|&\ncomplete -cf sudo|' ~/.bashrc
+sed -i -e 's|# for examples$|&\ncomplete -cf sudo|' ~/.bashrc