Fixes issue with incorrect characters in time strings on UI.
Fix platform dependency
Fix return value with incorrect strings.
Just use strptime and strftime on all platforms.
Emulate strptime on msvc... because they don't have it and their get_time is buggy.
All requested config values are written into SL1 ini file inside the zip
* TIme.hpp and Time.cpp is now part of libslic3r instead of libslic3r_gui
* Updated time manipulation function: separate timestamp_local_str and timestamp_utc_str
* timestamp_utc_str is used in header_slic3r_generated(). Gcode now contains UTC timestamps
atomically. The code was taken from the llvm project, it is complex
and hopefully it covers all the Windows file system quirks. Vojtech
has highest hopes, that this will fix the various PrusaSlicer.ini
file corruptions.
Enabled the locales switching and error handling on Linux as well,
where now the missing locales are reported and running the locale-gen
tool is recommended.
used for Perl unit / integration tests only. With this commit,
the code will be cleaner, but likely the unit tests will not run
on Windows, if installed in a localized path.
