Output debug info only in debug mode
Use transparency from color name. Fixes #852
Output debug info only in debug mode
Set fixed point to 2^16
Removed unused code
Removed unused code
Bugfix: Zoom was broken for orthographic cameras. Fixes #853
Allow slices to be specified independently of twist. Fixes #850
Fix handling of multi-line comments.

If not eaten by the lexer, the comment content will be dumped to stdout
as default action.
Merge branch 'master' of github.com:openscad/openscad
redo 2d tests to be viewed from the top down. experiment w altering viewall code
add --autocenter option to make it easier to test 2d objects properly
new 2d test images based on new camera angles
Merge branch 'test3dexport' of github.com:openscad/openscad into test3dexport
Merge branch 'master' of github.com:openscad/openscad into test3dexport

Conflicts:
	src/color.cc