Steps to extend TL signing key
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* get main key dir from USB stick
* set GNUPGHOME to the respective directory
* gpg1 --edit-key 0x0D5E5D9106BAB6BC
	key 2		# select signing sub key
	expire
	1y
	save
* export signing key
	gpg1 --export 0x0D5E5D9106BAB6BC > tmpkey
* send to key server
	gpg1 --keyserver hkp://pool.sks-keyservers.net --send-key 06BAB6B
* import into TL subversion
	gpg1 --homedir .../Master/tlpkg/gpg --import tmpkey
* after testing push out tlcritical