latest android sdk bug plus httpd

emulator in r20 segfaulting on a headless box without opengl.

the simple node based http static server to use:
https://github.com/nodeapps/http-server

to not have to use sudo anymore (on my laptop) to install node modules via npm globally (-g flag):

sudo chown -R username:group /usr/local/bin/
sudo chown -R username:group /usr/local/lib/