Archiver, 7z Alternative and FreeArc Replacement

[kj911]

The old laptop specs, see image:

Tested another Xeon PC: works! (OS is same, Win7 SP1 x64, Xeon E5-2665 CPU)

Quick test from internal zstd compression, found two bugs:

1. The program's exception handling when the syntax is incorrect... /Red lines. Good preserved in green coloured text./
2. There is no feedback on the success of testing the archive. /Blue lines./

C:\Users\Joci\Desktop\Arch>Archiver.exe a "C:\totalcmd" pack0.arch -mzstd:l22:w31:s9:f1

Original Total Data: 22226432, Actual data size: 22231292

Processing codec 1/1: zstd
  Input file: chain_1.tmp (22231292 bytes)
  Output file: chain_2.tmp
Progress: 100,00% | Compression Ratio: 31,16  zstd: 22231292 -> 6928193 (31,16%)


Final compressed size: 6928193
Overall compression ratio: 31,16%
Compression vs original estimate: 31,17%

C:\Users\Joci\Desktop\Arch>Archiver.exe d pack0.arch zzz
EAccessViolation: Access violation at address 000000000040DC55 in module 'Archiv
er.exe' (offset DC55). Read of address FFFFFFFFFFFFFFFF

C:\Users\Joci\Desktop\Arch>Archiver.exe d pack0.arch null

C:\Users\Joci\Desktop\Arch>Archiver.exe d pack0.arch .\zzz
Writing: wincmd.key - File: 100,0% - Total: 100,0% - Speed: 0,06 MB/s