integrate toolchain updater in then Main Menu
replace copy functionality in Toolchain Menu with backup function
new commandline options:
./s3 tcupdate -b/--backup TOOLCHAIN-NAME #create backup archive in download folder
./s3 tcupdate -d/--duplicate TOOLCHAIN-NAME NEW-TOOLCHAIN-NAME #create a copy of toolchain
integrate toolchain updater in then Main Menu replace copy functionality in Toolchain Menu with backup function new commandline options: ./s3 tcupdate -b/--backup TOOLCHAIN-NAME #create backup archive in download folder ./s3 tcupdate -d/--duplicate TOOLCHAIN-NAME NEW-TOOLCHAIN-NAME #create a copy of toolchain