Better names for output files generated by RetDec

[PeterMatula]

Decompilation of file ackermann.elf produces the following files:

ackermann.c
ackermann.c.backend.bc
ackermann.c.backend.ll
ackermann.c.frontend.dsm
ackermann.c.json

These name patterns are historic and have several problems:

• *backend* files are not generated by backend.
• ackermann.c.frontend.dsm should be on the same level as output C, so frontend suffix should not be generated.
• We are dropping .elf suffix in our scripts, this is not really useful.
• If ackermann.elf was compiled from ackermann.c, then decompilation will overwrite this file.

Think up a better system and implement it.

[PeterMatula]

New design:

• No suffix magic, just append our suffixes to the original name. E.g. input.whatever -> input.whatever.<our_suffix>.
• We generate 5 outputs with 5 different suffixes. For input.exe it would be:
  • input.exe.c - main output - decompiled C source
  • input.exe.dsm - disassembly (generated in bin2llvmir)
  • input.exe.bc- LLVM bit code (output of bin2llvmir)
  • input.exe.ll - LLVM IR (output of bin2llvmir)
  • input.exe.json - RetDec JSON config

[PeterMatula]

Implemented as designed in the next branch.