Fixed typo s/allow_pure_perl/allow_pureperl/.
remove trash
Checking in changes prior to tagging of version v0.4.9.

Changelog diff is:

diff --git a/Changes b/Changes
index 8219288..27d9199 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,13 @@ Revision history for Perl extension Minilla

 {{$NEXT}}

+v0.4.9 2013-06-08T04:58:01Z
+
+    - s/allow_pure_perl/allow_pureperl/!
+      allow_pure_perl is just a typo... orz.
+      This option is introduced in v0.4.0.
+      (tokuhirom)
+
 v0.4.8 2013-06-08T01:25:45Z

     - Win32 Portability fix for testing code.