initial support for "earth" style particle display
Correct font setting logic for some dialogs.
Make wxFileDialog parent-less, to avoid possible orphaning. (FS#1515)
Correct potential shutdown fault.
improve grib record logic for undefined values
finalize initial particle map support
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN
correct value for printf format
correct error in return logic
correct bounding calculation for grib barbs and numbers
fix case of lines wrapping the wrong way around the world
Adding igore files.
Adding control if the compiling system has opengl or not.
Correct possible crash when clicking button/Ctrl while playback running.
Also lightlty simplify playback control
Merge pull request #162 from seandepagnier/grib-earth

Grib earth
Merge pull request #163 from seandepagnier/master

A few small bug fixes
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN
Merge pull request #164 from NicolasJourden/master

OpenCPN compilation crash if OpenGL is not present.
Correct rendering of skewed polyconic raster charts (FS#1532)
Correct occasional chart info window display error. (FS#1500)