Remove duplicate code.
Temperature IOP: gui_update: cmp against camwb using memcmp
Temperature IOP: refactor DT_IOP_NUM_OF_STD_TEMP_PRESETS
Temperature IOP: Match stored WB multipliers against all camera WB presets and select matched preset. Fixes #8303
Temperature IOP: apply_preset(): fix typo
Temperature IOP: apply_preset(): no need to recompute makermodel/model each time
Might be a bit faster.
Temperature IOP: apply_preset(): do not look through ALL presets, only through different tuning values of that base preset
Temperature IOP: implement interpolation between camera WB presets finetunings
NOTE: for interpolated data #8303 still is an "open" issue

If we fail to find enough good data, hysteresis happens (it stays on previously used values)

Inspired by Denoiseprofile IOP dt_noiseprofile_interpolate() and it's usage
Temperature IOP: Match stored WB multipliers against interpolated camera WB presets and select matched preset. Refs #8303
Hide mouse in slideshow mode
mipmap cache: safety margin around full buffers. avoids deadlocks for me.
Merge remote-tracking branch 'origin/pr/781'
spots: fix icons states bug 10216
Add support for the Pentax *istDL
Switch to GTK3 in cmake
Import osm-gps-map-1.0.2

Previous versions does not compile with GTK3
Cleanup CMake system now that GTK uses pkg-config
Respect REQUIRED when looking for GTK3 components
Load darktable.css instead of dakrtable.gtkrc

This is just a sample .css file with a dark background color to see if
loading worked.
Temporarily enable deprecated GTK/GDK symbols