use static name so there won't be an issue when used as real ENV variable
add GS_BRANCH to development build version numbers instead of static "-preview"
let haveged start before gdfdl-custom-init so that we can take advantage of it
add open-vm-tools
add GS system add-on management
make Squeeze Kernel 3.2 upgrade optional via system add-on
some minor improvements
remove rack stuff
make GS_SYSADDON_DIR a system variable
auto-compile kernel modules for OpenVM tools
remove double entry from SQL command
chmod 755 for gs-addon.sh
build OpenVM kernel modules for target system kernel
cleanup after kernel module installation
improved prompt for factory reset
improved add-on functionality
remove old stuff
optical correction
improved backup handling for gs-update
add GS_SYSTEM_GIT_URL