Fix c++11 compiling.
Strange shit is happening... how the hell did this happen?.
Add missing util/string.h
Fix MacOS build.
Some cleanup, moved the inside function into the polygon class instead of the comb class. Made all the lineends unix style. Added namespaces.
Merge branch 'master' of github.com:Ultimaker/CuraEngine
Make bridges per fill area instead of per layer.
fix compilation on Linux

src/gcodeExport.cpp:63:23: error: cannot convert ‘fpos_t {aka _G_fpos_t}’ to ‘long int’ for argument ‘2’ to ‘int fseek(FILE*, long int, int)’
     fseek(f, oldPos, SEEK_SET);
Merge pull request #80 from martinxyz/master

fix compilation on Linux
Fix crash bug.
Fix crash bug.
Merge branch 'master' of github.com:Ultimaker/CuraEngine
_Polygon define is no longer needed due to namespaces.
Add auto center option, Codeblocks compilation support