mtpaint-3.40-bp152.3.18

- Augment mtpaint-3.40-giflib5.diff to support giflib7 API

- fix build with giflib-5.x (mtpaint-3.40-giflib5.diff)

- Update to 3.40.
  * Usage of multiple CPU cores to speed up slower processing
    tasks.
  * Two new tools - for image segmentation, and for approximating
    gradients using palette colours.
  * Dynamic preview in colour selectors.
  * sRGB (linear RGB) colour scales and gradients.
  * Palette sorting by brightness.
  * Dock area to hold settings toolbar and layers window.
  * Colour chooser popup.
  * Autoscrolling in canvas, view and palette windows.
  * Auto-resizing toolbars.
  * Support for PBM/PGM/PPM/PAM, PCX and SVG image formats.
  * Support for ICC colour profiles in images.
  * Loading of animated GIFs and multipage TIFFs into layers.
  * Palette extraction from image files.
  * Format conversions in file actions.
  * "Snap to grid" mode.
  * New keyboard shortcuts.
  * And various speedups, interface improvements and bugfixes.
- Drop mtpaint-3.31-libpng14.patch,
  mtpaint-fix-no-add-needed.patch, mtpaint-3.31-openjpeg.patch,
  mtpaint-3.31-ld_fix.patch (fixed upstream or no need).
- Refresh mtpaint-buff.diff.
- Rework mtpaint-xdg-open.patch: fix hardcoded apps and options.
- Add mtpaint-3.40-strip.patch: don't strip binary (rh#787462).
- Correct build dependencies:
  * Remove: dos2unix, gettext.
  * Add: pkgconfig(libopenjpeg) (for openSUSE >= 12.2) or
    libjasper-devel, unzip, pkgconfig(lcms2).
  * Use pkgconfig(*).
- Requires ImageMagick; recommends exif.
- Don't call %suse_update_desktop_file macro.
- Split off language subpackage.
- Correct configure options:
  * Remove: debug.
  * Add: gif, gtkfilesel, imagick, jp2 or jasper, lcms2, thread.
- Use parallel build.
- Remove check for unsupported openSUSE versions.
- Mark man as doc.
- Clean up and formatting spec.

- license update: GPL-3.0+
  For the docs look at the COPYING (1.2 _not_ 1.3). For the main package
  there is no indication that GPLv3 only is intended

- change license to be in spdx.org format

- added mtpaint-3.31-ld_fix.patch to fix failure caused by new ld

- Fix build with no-add-needed.

- removed obsolete existing %post/%postun

- call %desktop_database_post/un

- added mtpaint-3.31-libpng14.patch on suse 11.3 to make it build
  with libpng14

- use noarch only for >= 11.2

- new package (porting from packman)