3.10.17 Changes from 1.2.0 to 1.2.3

Most of the changes are only minor improvements or bugfixes:

• fixed $findxpertflags= assignment
• added lots of doublequotes in assignments to improve safety
• minor changes to restore and verify routines to share common code
• fixed bugs introduced by new doublequotes in read-data/write-data
• made it able to autodetect and read non-multibuf archives (V1.0/V1.1 type)
• (re-)added menu to switch off MultiBuf use
• fixed a few bugs in read-data/write-data
• started work on improved afio
• directory requester is sorting entries now
• fixed a missing close() in multibuf.c
• added last-command variable to be used by check-error
• introduced common ``<'' key to go back to previous menu
• made directory requester show symlinks
• fixed Goto-Operation to handle archives with any count of files on the tape -- important for mixing multibuf/non-multibuf archives
• changed copyright to BSD like

New features that have been added, are:

• first try at remote device support via rsh(1), works fine on my machine
• added autodetection/check tape & restructured device menu