Fixed --avoid-crossing-perimeters and --support-material after the xsdata merge
Fixed: Missing include directive
The 'use' prevented the build.

There is probably a reason for this line though.
Minor typos preventing correct positioning after recent XS merge
Merge pull request #1424 from 4ZM/master

Changes to make slic3r build on Arch
Removed debugging line
Don't grow horizontal shells having acute angles. #1387
Return Surface objects by reference from SurfaceCollection objects and fix a bug in XS code causing some shell options to be ignored
Fixed wipe (includes regression test). #1421
Optimization
Merge branch 'master' into xsdata-boost

Conflicts:
	lib/Slic3r/Print/Object.pm
Ported clip_end()