create_virtualimage: robustness creating image at least on Ubuntu
mysql-hosttools: use our zlib
Merge pull request #1799 from vpeter4/virtual

create_virtualimage: robustness creating image at least on Ubuntu
Python: fix a minor (re)build error
bluez: rework install script, install some tools to release build

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge branch 'master' of github.com:OpenELEC/OpenELEC.tv
merge