Apply general User Font setting for grib_pi dialog
Work around OpenGL mipmap base level error in Mac platform drivers.
Bound underzoom of charts on piano selection with "Preserve Scale.." option set.
Correct PlugIn OpenGL overlay logic for API v1.12.
Merge pull request #170 from Ptizef/master

Apply general User Font setting for grib_pi dialogs
Bound CPU duty-cycle of GRIB Particle display rendering to 50%.
Merge branch 'master' into wxqt-master