Revert "Align rectilinear and line infill across layers. #712"

This reverts commit a0a54ea70697418ae6fb7939490dcf3c29ecd845.
New support material implementation
Align rectilinear and line infill across layers (new implementation). #712
Merge branch 'master' into new-support

Conflicts:
	lib/Slic3r/Fill/Base.pm
	lib/Slic3r/Print/Object.pm
Typo