Fix compatibility with zsh on finding device and vendor files for "including" and Execute the contents of any vendorsetup.sh files we can find. 
code re-used from paranoid.

Change-Id: I0c28bfacd90789fbcd7f7438cd35d828770f757d
Merge "Fix compatibility with zsh on finding device and vendor files for "including" and Execute the contents of any vendorsetup.sh files we can find.  code re-used from paranoid." into pac-4.4