ENH: update FAQ for OSGeo4W gdal package + update supported gcc and cmake
ENH: update FAQ for OSGeo4W gdal package + update supported gcc and cmake

orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB,orfeotoolbox/OTB