inkscape/src/extension/internal/image-resolution.cpp, branch livecoding

Clarify licenses

2018-11-08T17:18:20+00:00

- add license headers to everything
- convert a few files from public domain or LGPL2.1+ to GPL2+
- some archaeology to clarify which files are from which library

CMake: Allow to build with GraphicsMagick instead of ImageMagick

2018-10-02T20:19:07+00:00

For now we still default to ImageMagick, but we can fall-back to
GraphicsMagick (e.g. if only ImageMagick 7 is available; add a check
for this).

To prefer GraphicsMagick despite a compatible version of ImageMagick
use -DWITH_IMAGE_MAGICK=OFF when running CMake

Remove #include "config.h" wherever possible

2018-10-01T22:50:12+00:00

Run clang-tidy’s modernize-deprecated-headers pass.

2018-06-18T12:27:01+00:00

This renames most C <*.h> includes into C++  includes.

Run clang-tidy’s modernize-use-nullptr pass.

2018-06-18T12:27:01+00:00

This replaces all NULL or 0 with nullptr when assigned to or returned as
a pointer.

Misc. typos

2017-11-07T18:55:26+00:00

Found using `codespell -q 3 -w --skip="*.svg,*.po,*.ts,./share/tutorials,./src/libavoid,./packaging/win32/languages,./man,./src/2geom" -I ../inkscape-whitelist.txt`
whereby whitelist file contained:
```
dum
iff
glight
substract
te
upto
```

[Bug #1545319] Failure to retrieve image resolution of PNGs with Units: Undefined (clang from Xcode 4.6.3).

2016-04-11T06:01:57+00:00

Fixed bugs:
  - https://launchpad.net/bugs/1545319

(bzr r14772)

Importing. Fix for Bug #1325822 (BMP images resolution not correctly imported).

2014-10-01T07:24:30+00:00

Fixed bugs:
  - https://launchpad.net/bugs/1325822

(bzr r13573)

Fix for Bug #1302987 (Importing a PNG image with unittype field undefined fails).

2014-04-10T05:43:01+00:00

Fixed bugs:
  - https://launchpad.net/bugs/1302987

(bzr r13279)

Fix for Bug #1275443 (Including picture results in crash).

2014-02-07T20:08:10+00:00

Fixed bugs:
  - https://launchpad.net/bugs/1275443

(bzr r13006)