Fix gradle download url for 2.12

diff --git a/makebuildserver b/makebuildserver
index 1fa18343d8f3982eec20dc18a68974b1d7538f74..dba99c4cbe2fc122dd3fc21a5401d77def0dc865 100755 (executable)
--- a/makebuildserver
+++ b/makebuildserver
@@ -277,7 +277,7 @@ cachefiles = [
      'https://services.gradle.org/distributions/gradle-2.11-bin.zip',
      '8d7437082356c9fd6309a4479c8db307673965546daea445c6c72759cd6b1ed6'),
     ('gradle-2.12-bin.zip',
-     'https://services.gradle.org/distributions/gradle-1.12-bin.zip',
+     'https://services.gradle.org/distributions/gradle-2.12-bin.zip',
      'e77064981906cd0476ff1e0de3e6fef747bd18e140960f1915cca8ff6c33ab5c'),
     ('Kivy-1.7.2.tar.gz',
      'https://pypi.python.org/packages/source/K/Kivy/Kivy-1.7.2.tar.gz',