corrections to opengl route rendering
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN into optimum-merging
Correct S52Plib raster symbol table initialization sequence.
Merge pull request #118 from seandepagnier/optimum-merging

Optimum merging -- improved corrections from chucksk for route rendering
Prototype core modifications to support vector chart objects delivery to
plugins
Support CM93
Add a TODO note about CM93 objects
Add handling of _texto/_texta for CM93 charts