Add support for database compaction.

lib/couchrest/core/database.rb

@@ -149,7 +149,12 @@ module CouchRest
       slug = CGI.escape(doc['_id'])
       CouchRest.delete "#{@root}/#{slug}?rev=#{doc['_rev']}"
     end
-    
+
+    # Compact the database, removing old document revisions and optimizing space use.
+    def compact!
+      CouchRest.post "#{@root}/_compact"
+    end
+
     # DELETE the database itself. This is not undoable and could be rather
     # catastrophic. Use with care!
     def delete!

spec/couchrest/core/database_spec.rb

@@ -461,6 +461,16 @@ describe CouchRest::Database do
     end
   end
   
+
+  describe "compacting a database" do
+    it "should compact the database" do
+      db = @cr.database('couchrest-test')
+      # r = 
+      db.compact!
+      # r['ok'].should == true
+    end
+  end
+
   describe "deleting a database" do
     it "should start with the test database" do
       @cr.databases.should include('couchrest-test')
@@ -475,4 +485,4 @@ describe CouchRest::Database do
   end
 
 
-end
+end