Fix mac release build

hudson_mac_package_release.rb

@@ -95,7 +95,8 @@ puts "Creating directory structure"
 `mkdir -p #{osgPluginsDir}`
 
 puts "Copying binaries"
-bins = ['fgfs', 'fgjs', 'fgcom', 'fgviewer']
+`cp #{$prefixDir}/fgfs.app/Contents/MacOS/fgfs #{macosDir}/fgfs`
+bins = ['fgjs', 'fgcom', 'fgviewer']
 bins.each do |b|
   if !File.exist?("#{$prefixDir}/bin/#{b}")
     next