Reverted the introduction of the "presets" subdir to store the print/filament/printer profiles. The change has been reverted to support the upstream slic3r using the --datadir. While there are breaking changes in the PlaceholderParser, if the new macro processing is not used, the two slic3rs are still mostly interchangeable.
Reverted the introduction of the "presets" subdir to store
the print/filament/printer profiles.
The change has been reverted to support the upstream slic3r
using the --datadir. While there are breaking changes
in the PlaceholderParser, if the new macro processing is not used,
the two slic3rs are still mostly interchangeable.

The "presets" subdir may be enabled with the SLIC3R_PROFILE_USE_PRESETS_SUBDIR
and it may happen, that it will be activated one day if ever the two
slci3rs diverge too much.

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r