scsi::get_des & others should take a non-const buffer since they modify it
Reorder functions in main.cpp to declare internal functions static
Fix compile error in newer GCC (Compilation error #72) with more explicit cast
Remove some unused constants
Add KAD type enum
Pass key vector by reference instead of copying
Closes: https://github.com/scsitape/stenc/issues/72
* Introduce portable, endian-clean structures using shifts and masks instead of bitfields
* Modernize SCSIExecute with RAII and exceptions
* Convert SP-IN calls to use the new portable SCSI structures and functions
* Convert SP-OUT code to use the new portable SCSI structures and functions
* Delete bitfield-based code and remove runtime endian check
Closes: https://github.com/scsitape/stenc/issues/63
- pass string arguments by reference
- replace macros with constexpr where possible
- move command strings out of global scope
- use standard library strerror instead of custom printer readIOError
