Use external Potrace
Tracing. Fix for Bug #1456387 (Trace Bitmap: Multiscan > Brightness steps produces mostly black result).
Fixing dead assignment and uninitialized argument value.
Purge sp_desktop_message_stack
Get rid of gtkmm top-level header usage - not required by API
cppcheck tells us: Memory leak: potraceBitmap -> fixed, between new and old code position, keepGoing is not modified
cppcheck: initialisation and warning cleanup
Cleaning up trace methods to aid fixing color inversion.
Fix for PathString to prevent it from getting into a very, very long copying run and make it use minimumexponent. Plus some extra tests.
Updating deprecated type calls.
Have Paint Bucket generate the necessary GrayMap for potrace directly, skipping the standard, slower potrace filtering routines.
warning cleanup
switch to using SVG::PathString for building paths
patch 1598684: better trace quantization
remove debug output
patch 1591723 for extra tracing parameters
refactoring, add background removal
patch [ 1503865 ] Siox performance patch
Get rid of the SP_DT_* macros which do nothing more than provide additional, confusing, names for other functions. If shorter names are desired, the actual functions should be renamed -- or better, made into member functions.
pjrm's fix from bug 1188811
moving trunk for module inkscape