- added some outline drawing primitives
- implemented outlines for inset and some selections
- does not work with transparency and probably never will


git-svn-id: svn://svn.code.sf.net/p/gwyddion/code@16697 25697fe4-d644-49b8-9d30-be5465f2adf3
- added some outline vs transparency comment


git-svn-id: svn://svn.code.sf.net/p/gwyddion/code@16698 25697fe4-d644-49b8-9d30-be5465f2adf3