Portable mode should use relative paths

[Thraka]

Portable mode isn't fully portable because it uses fully qualified paths in two places:

• vmm.ini for entries to the machine configs
• 86box.cfg files for paths to storage and cd roms and floppies

I did some tests where I made the paths in the files relative and everything seems to work fine (it just overwrites the values with fully qualified paths when you close or change something)

[OBattler]

I'm quite sure CD-ROM and floppy storage paths are relative.

[Thraka]

Hmm strange. I'm on Windows but I get absolute paths for the images.

[OBattler]

Are your images located in a path that's inside the VM folder?

[Thraka]

No, they're in the same folder as the 86box.exe.

CDROMS\
Drives\
Floppies\
roms\
samples\
shaders\
soundfont\
Virtual Machines\
86box_global.cfg
86Box.exe
discord_game_sdk.dll
...

[OBattler]

This is now fixed for image paths, only vmm.ini is left.

[LeoABELS121]

@OBattler It seems that the "config_file=" and "config_dir=" lines in "vmm.ini" are still not relative paths.

The file is still generating absolute paths, forcing me to edit it manually.

Could you please take a look at this?