fix: gboolean uses TRUE/FALSE
fix: include SSE intrinsics header
Revert some previous commits about bad alpha

This reverts following commits: 4f842582217c2b2a5d6774e5e8b47ee34bb690e6
6757eb6bcba2243fde76cde45a6ec9a2dbf64905
c00b45c08eb72b872fe2d10e39a840d01db570bb
2f5d8f680c284a73499c1a444b24aa2d61c45b87
gamutcheck & overexposed: robust fix for alpha issues
fix #9970: take correct glyph for mdash
usermanual: use en-dash instead of em-dash; all in all this looks better to my eyes
usermanual: fix a bunch of xml bugs
changed space in front of en dashes to non-breaking space.
cleaned up unclear/awkward phrasing. replaced developer jargon like 'substring'.
Merge pull request #572 from Terrycloth/clarifying-text-in-user-manual

Fourth batch of edits to user manual.
Hopefully fix some minor memleaks
Fix the crops for the FZ series Panasonics
Fix another minor memleak

This is untested as I don't have a camera handy to run that code. No
risk, no fun.
Remove unneeded strlen()
Merge pull request #573 from pedrocr/fix-panasonic-crops

Fix the crops for the FZ series Panasonics
update to LibRaw 0.16.0, load x-trans images

- Use LibRaw 0.16.0 to load x-trans images
- LibRaw >= 1.15.0 no longer allows document_mode (which returned
  grayscale uninterpolated data), hence now receive multi-channel
  data then copy it to dt single-channel mosaic format
- Cull unneeded libraw parameters which pertain to output.
- Libraw scales colors and subtracts black point, so no need to do this
  in dt_imageio_open_raw()
- For x-trans images, on image load orient/shift the mosaic pattern
  depending on orientation & usable image area.
- No longer blacklist x-trans raw files
fast downsampling to demosaic x-trans images
linear demosaic for x-trans files
highlights module for x-trans
temperature iop for x-trans