Alter requisites for compile and native on Windows

Previous definition caused issues when compiling natively since
DevKit was not enabled at the proper time.

This is caused by ports getting prepend into the dependency list
of `compile` task way before than it should have been.

This change, while feels like a hack, gets the job done.

And I'm making a cup of tea to celebrate it 😄

Author: luislavena

tasks/native.rake

@@ -9,12 +9,6 @@ BINARY_VERSION = "3.7.17"
 URL_VERSION    = "3071700"
 URL_PATH       = "/2013"
 
-# prepend DevKit into compilation phase
-if RUBY_PLATFORM =~ /mingw/
-  task :compile => [:devkit]
-  task :native  => [:devkit]
-end
-
 task :devkit do
   begin
     require "devkit"

tasks/vendor_sqlite3.rake

@@ -85,3 +85,9 @@ task :cross do
     ENV.delete(var)
   end
 end
+
+# prepend DevKit into compilation phase
+if RUBY_PLATFORM =~ /mingw/
+  Rake::Task["compile"].prerequisites.unshift "devkit"
+  Rake::Task["native"].prerequisites.unshift  "devkit"
+end