Merging thcapi PR

License and Readme updated, etc folder created.
Merging thcapi PR Sources
Fixed Static Analyzer warning
Merge branch 'refs/heads/pr/12'

Conflicts:
	.gitignore
	src/Classes/ParsedGCode.h
	src/Classes/ParsedGCode.m
	src/Pleasant3D.xcodeproj/project.pbxproj
	src/Pleasant3D.xcodeproj/xcshareddata/xcschemes/Pleasant3D.xcscheme
	src/Resources/XIBs/GCodeDocument.xib
	src/Resources/XIBs/MachineOptionSheet.xib
	src/Resources/XIBs/MachiningQueue.xib
	src/Resources/XIBs/PreferencesMachines.xib
	src/Resources/XIBs/SliceNDiceDocument.xib
	src/Resources/XIBs/Toolbox.xib
	src/Resources/XIBs/en.lproj/AddMachine.xib
	src/Resources/XIBs/en.lproj/GCodeDocument.xib
	src/Resources/XIBs/en.lproj/MachineOptionSheet.xib
	src/Resources/XIBs/en.lproj/MachiningQueue.xib
	src/Resources/XIBs/en.lproj/PreferencesMachines.xib
	src/Resources/XIBs/en.lproj/SliceNDiceDocument.xib
	src/Resources/XIBs/en.lproj/Toolbox.xib
	src/Resources/XIBs/fr.lproj/AddMachine.xib
	src/Resources/XIBs/fr.lproj/GCodeDocument.xib
	src/Resources/XIBs/fr.lproj/MachineOptionSheet.xib
	src/Resources/XIBs/fr.lproj/MachiningQueue.xib
	src/Resources/XIBs/fr.lproj/PreferencesMachines.xib
	src/Resources/XIBs/fr.lproj/SliceNDiceDocument.xib
	src/Resources/XIBs/fr.lproj/Toolbox.xib
	src/Resources/etc/en.lproj/Credits.rtf
	src/Resources/etc/fr.lproj/Credits.rtf
	src/subprj/GCodeQuickLook/GCodeQuickLook.xcodeproj/xcshareddata/xcschemes/GCodeQuickLook.xcscheme
	src/subprj/P3DCore/P3DCore.xcodeproj/xcshareddata/xcschemes/P3DCore.xcscheme
	src/subprj/P3DCore/Vector3.h
	src/subprj/PrinterDriver/PleasantMill/PleasantMill.xcodeproj/xcshareddata/xcschemes/PleasantMill.xcscheme
	src/subprj/PrinterDriver/Sanguino3G/Sanguino3G.xcodeproj/xcshareddata/xcschemes/Sanguino3G.xcscheme
	src/subprj/STLQuickLook/STLQuickLook.xcodeproj/xcshareddata/xcschemes/STLQuickLook.xcscheme
	src/subprj/ToolPlugins/FileSaver/FileSaver.xcodeproj/xcshareddata/xcschemes/FileSaver.xcscheme
	src/subprj/ToolPlugins/ForwardTool/ForwardTool.xcodeproj/xcshareddata/xcschemes/ForwardTool.xcscheme
	src/subprj/ToolPlugins/GCodeGenerator/GcodeGenerator.xcodeproj/xcshareddata/xcschemes/GCodeGenerator.xcscheme
	src/subprj/ToolPlugins/GCodeImport/GCodeImport.xcodeproj/xcshareddata/xcschemes/GCodeImport.xcscheme
	src/subprj/ToolPlugins/STLImport/STLImport.xcodeproj/xcshareddata/xcschemes/STLImport.xcscheme
	src/subprj/ToolPlugins/Slice/Slice.xcodeproj/xcshareddata/xcschemes/Slice.xcscheme
Changed Credits
Move P3DCore from GC to ARC
Move GCodeQuickLook from GC to ARC
Move STLQuickLook from GC to ARC
Export ORSSerial Headers
Move STLImport from GC to ARC
Move Sanguino3G from GC to ARC
Move PleasantMill from GC to ARC
Move FileSaver from GC to ARC
Move ForwardTool from GC to ARC
Move GCodeGenerator from GC to ARC
Move GCodeImport from GC to ARC
Move Slice from GC to ARC
Move Pleasant3D from GC to ARC
General code cleanup
Fixed some memory issues
Experimental Slice&Dice functionality is now optional (and switched off by default)
There’s an OpenGL problem with the Quicklook generators (at least) on OS X 10.9.
These changes implement better error checking and a fallback to the standard file icon in case Quicklook generation fails. This should solve performance problems with the Quicklook generators until the OpenGL problem is solved.