_Polygon define is no longer needed due to namespaces.
Added support for multiple build profiles. Defaulting to release.
Changed NULL to nullptr
Prepare for supporting multiple different infills.
Removing a wierd unwanted space.
Applied the quickfix from the working branch.
Merge pull request #82 from Skeen/build_profiles

Add support for multiple build profiles
Merge pull request #83 from Skeen/nullptr

Change NULL into nullptr
Merge pull request #85 from Skeen/multi_infill

Prepare for supporting multiple different infills.
Fixing https://github.com/daid/Cura/issues/820
Merge branch 'master' of github.com:Ultimaker/CuraEngine
Merge remote-tracking branch 'upstream/master' into HEAD

Conflicts:
	Makefile