fix dependencies for __rvm_ruby

Signed-off-by: Nico Schottelius <nico@brief.schottelius.org>

cdist/conf/type/__rvm_ruby/manifest

@@ -20,6 +20,6 @@
 #
 
 # Required packages for building ruby
-for package in bzip2; do
+for package in bzip2 gcc make; do
     __package --state present
 done

docs/changelog

@@ -7,6 +7,7 @@ Changelog
 2.1.0pre6:
 	* New Example: Turn remote calls into local calls (used for unittesting)
 	* Core: Export PYTHONPATH, it's also needed by emulator
+	* Type __rvm_ruby: Add clean package dependencies
 
 2.1.0pre5: 2012-11-01
 	* Core: First round of tests updated to work with multiple configuration directories