Merge branch 'update_ruby_6_0_stable' of /home/git/repositories/gitlab/gitlabhq into 6-0-stable

doc/install/installation.md

@@ -91,9 +91,9 @@ Remove the old Ruby 1.8 if present
 Download Ruby and compile it:
     mkdir /tmp/ruby && cd /tmp/ruby
-    curl --progress ftp://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p247.tar.gz | tar xz
-    cd ruby-2.0.0-p247
-    ./configure
+    curl --progress ftp://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p353.tar.gz | tar xz
+    cd ruby-2.0.0-p353
+    ./configure --disable-install-rdoc
     make
     sudo make install