Rakefile in rubyfb-0.5.4 vs Rakefile in rubyfb-0.5.5

@@ -1,12 +1,12 @@
 require 'echoe'
-e = Echoe.new('rubyfb', '0.5.4') do |p|
+e = Echoe.new('rubyfb', '0.5.5') do |p|
   p.description    = "Firebird SQL access library"
   p.url            = "http://rubyforge.org/projects/rubyfb"
   p.author         = "George Georgiev"
   p.email          = "[e-mail]"
   p.rdoc_pattern   = ["{examples,ext,lib}/*.rb", "CHANGELOG", "README", "LICENSE"]
-  p.need_tar_gz    = !PLATFORM.include?("win32")
+  p.need_tar_gz    = !(RUBY_PLATFORM.include?("win32") || RUBY_PLATFORM.include?("mingw32"))
 
   if ARGV.include? "binpkg"
     p.platform=Gem::Platform::CURRENT
     p.eval = Proc.new {
       self.extensions=nil