mini refactoring gdt-install
gstrap added select stage3 & portage
gmirrors added enviroment flag
glist added -e flag
add share function file
function add read select var
fix ENV_READ
gmirrors no numb env
fix function ENV_CLEAR
gmirrors fix: one string env_save
env fix
add gdtenv tools
gdtrc path fix
installer fix
mini fix
gmirror fix save enviroment
glist fix end slash
add function ENV_SAVE_LIST & ENV_SET
gstrap use env ARCH parameter
refactoring style function code